{"id":59450,"date":"2026-01-13T21:57:06","date_gmt":"2026-01-13T13:57:06","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/59450.html"},"modified":"2026-01-13T21:57:06","modified_gmt":"2026-01-13T13:57:06","slug":"%e9%bb%91%e9%a9%ac%e7%a8%8b%e5%ba%8f%e5%91%98-c%e7%bc%96%e7%a8%8b%ef%bc%88%e4%b8%80%ef%bc%89-%e5%ad%a6%e4%b9%a0%e7%ac%94%e8%ae%b0","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/59450.html","title":{"rendered":"\u9ed1\u9a6c\u7a0b\u5e8f\u5458 | C++\u7f16\u7a0b\uff08\u4e00\uff09 | \u5b66\u4e60\u7b14\u8bb0"},"content":{"rendered":"<\/p>\n<h4>\u9ed1\u9a6c\u7a0b\u5e8f\u5458 | C&#043;&#043;\u7f16\u7a0b&#xff08;\u4e00&#xff09; | \u5b66\u4e60\u7b14\u8bb0<\/h4>\n<ul>\n<li>\u524d\u8a00<\/li>\n<li>\n<ul>\n<li>C&#043;&#043;\u57fa\u7840\u5165\u95e8<\/li>\n<li>\n<ul>\n<li>1 C&#043;&#043;\u521d\u8bc6<\/li>\n<li>\n<ul>\n<li>1.1\u7b2c\u4e00\u4e2aC&#043;&#043;\u7a0b\u5e8f<\/li>\n<li>\n<ul>\n<li>1.1.1\u521b\u5efa\u9879\u76ee<\/li>\n<li>1.1.2 \u521b\u5efa\u6587\u4ef6<\/li>\n<li>1.1.3 \u7f16\u5199\u4ee3\u7801<\/li>\n<li>1.1.4 \u8fd0\u884c\u7a0b\u5e8f<\/li>\n<\/ul>\n<\/li>\n<li>1.2 \u6ce8\u91ca<\/li>\n<li>1.3 \u53d8\u91cf<\/li>\n<li>1.4 \u5e38\u91cf<\/li>\n<li>1.5 \u5173\u952e\u5b57<\/li>\n<li>1.6 \u6807\u8bc6\u7b26\u547d\u540d\u89c4\u5219<\/li>\n<\/ul>\n<\/li>\n<li>2 \u6570\u636e\u7c7b\u578b<\/li>\n<li>\n<ul>\n<li>2.1 \u6574\u578b<\/li>\n<li>2.2 sizeof\u5173\u952e\u5b57<\/li>\n<li>2.3 \u5b9e\u578b&#xff08;\u6d6e\u70b9\u578b&#xff09;<\/li>\n<li>2.4 \u5b57\u7b26\u578b<\/li>\n<li>2.5 \u8f6c\u4e49\u5b57\u7b26<\/li>\n<li>2.6 \u5b57\u7b26\u4e32\u578b<\/li>\n<li>2.7 \u5e03\u5c14\u7c7b\u578b<\/li>\n<li>2.8 \u6570\u636e\u7684\u8f93\u5165<\/li>\n<\/ul>\n<\/li>\n<li>3 \u8fd0\u7b97\u7b26<\/li>\n<li>\n<ul>\n<li>3.1 \u7b97\u672f\u8fd0\u7b97\u7b26<\/li>\n<li>3.2 \u8d4b\u503c\u8fd0\u7b97\u7b26<\/li>\n<li>3.3 \u6bd4\u8f83\u8fd0\u7b97\u7b26<\/li>\n<li>3.4 \u903b\u8f91\u8fd0\u7b97\u7b26<\/li>\n<\/ul>\n<\/li>\n<li>4 \u7a0b\u5e8f\u6d41\u7a0b\u7ed3\u6784<\/li>\n<li>\n<ul>\n<li>4.1 \u9009\u62e9\u7ed3\u6784<\/li>\n<li>\n<ul>\n<li>4.1.1 if\u8bed\u53e5<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2>\u524d\u8a00<\/h2>\n<p>\u63d0\u793a&#xff1a;\u914d\u5957\u89c6\u9891&#xff1a;B\u7ad9&#xff1a;\u9ed1\u9a6c\u7a0b\u5e8f\u5458\u5320\u5fc3\u4e4b\u4f5c|C&#043;&#043;\u6559\u7a0b\u4ece0\u52301\u5165\u95e8\u7f16\u7a0b,\u5b66\u4e60\u7f16\u7a0b\u4e0d\u518d\u96be&#xff08;C&#043;&#043;\u6838\u5fc3\u7f16\u7a0b&#xff09; \u53ea\u662f\u4e3a\u65b9\u4fbf\u5b66\u4e60&#xff0c;\u4e0d\u505a\u5176\u4ed6\u7528\u9014&#xff0c;\u539f\u4f5c\u8005\u4e3a\u9ed1\u9a6c\u7a0b\u5e8f\u5458\u3002<\/p>\n<h3>C&#043;&#043;\u57fa\u7840\u5165\u95e8<\/h3>\n<h4>1 C&#043;&#043;\u521d\u8bc6<\/h4>\n<h5>1.1\u7b2c\u4e00\u4e2aC&#043;&#043;\u7a0b\u5e8f<\/h5>\n<p>\u7f16\u5199\u4e00\u4e2aC&#043;&#043;\u7a0b\u5e8f\u603b\u5171\u5206\u4e3a4\u4e2a\u6b65\u9aa4<\/p>\n<ul>\n<li>\u521b\u5efa\u9879\u76ee<\/li>\n<li>\u521b\u5efa\u6587\u4ef6<\/li>\n<li>\u7f16\u5199\u4ee3\u7801<\/li>\n<li>\u8fd0\u884c\u7a0b\u5e8f<\/li>\n<\/ul>\n<h6>1.1.1\u521b\u5efa\u9879\u76ee<\/h6>\n<p>Visual Studio 2017\u662f\u6211\u4eec\u7528\u6765\u7f16\u5199C&#043;&#043;\u7a0b\u5e8f\u7684\u4e3b\u8981\u5de5\u5177&#xff0c;\u6211\u4eec\u5148\u5c06\u5176\u6253\u5f00 \u70b9\u51fb\u53f3\u4e0b\u89d2\u521b\u5efa\u65b0\u9879\u76ee <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260113135702-69664f2e6f6e7.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260113135703-69664f2f42a0e.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h6>1.1.2 \u521b\u5efa\u6587\u4ef6<\/h6>\n<p>\u53f3\u952e\u6e90\u6587\u4ef6&#xff0c;\u9009\u62e9\u6dfb\u52a0-&gt;\u65b0\u5efa\u9879 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260113135704-69664f3006350.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260113135704-69664f30ab2c6.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u7ed9C&#043;&#043;\u6587\u4ef6\u8d77\u4e2a\u540d\u79f0&#xff0c;\u7136\u540e\u70b9\u51fb\u6dfb\u52a0\u5373\u53ef\u3002<\/p>\n<h6>1.1.3 \u7f16\u5199\u4ee3\u7801<\/h6>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;Hello World&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h6>1.1.4 \u8fd0\u884c\u7a0b\u5e8f<\/h6>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260113135705-69664f31734a4.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h5>1.2 \u6ce8\u91ca<\/h5>\n<p>\u4f5c\u7528&#xff1a;\u5728\u4ee3\u7801\u4e2d\u52a0\u4e00\u4e9b\u8bf4\u660e\u548c\u89e3\u91ca&#xff0c;\u65b9\u4fbf\u81ea\u5df1\u6216\u5176\u4ed6\u7a0b\u5e8f\u5458\u9605\u8bfb\u4ee3\u7801<\/p>\n<p>\u4e24\u79cd\u683c\u5f0f&#xff1a;<\/p>\n<p>1.\u5355\u884c\u6ce8\u91ca&#xff1a;\/\/ \u63cf\u8ff0\u4fe1\u606f \u901a\u5e38\u653e\u5728\u4e00\u884c\u4ee3\u7801\u7684\u4e0a\u65b9&#xff0c;\u6216\u8005\u4e00\u6761\u8bed\u53e5\u7684\u672b\u5c3e&#xff0c;\u5bf9\u8be5\u884c\u4ee3\u7801\u8bf4\u660e 2.\u591a\u884c\u6ce8\u91ca&#xff1a; \/* \u63cf\u8ff0\u4fe1\u606f *\/ \u901a\u5e38\u653e\u5728\u4e00\u6bb5\u4ee3\u7801\u7684\u4e0a\u65b9&#xff0c;\u5bf9\u8be5\u6bb5\u4ee3\u7801\u505a\u6574\u4f53\u8bf4\u660e \u63d0\u793a&#xff1a;\u7f16\u8bd1\u5668\u5728\u7f16\u8bd1\u4ee3\u7801\u65f6&#xff0c;\u4f1a\u5ffd\u7565\u6ce8\u91ca\u7684\u5185\u5bb9<\/p>\n<p>\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/1\u3001\u5355\u884c\u6ce8\u91ca<\/span><\/p>\n<p><span class=\"token comment\">\/\/2\u3001\u591a\u884c\u6ce8\u91ca<\/span><\/p>\n<p><span class=\"token comment\">\/*<br \/>\nmain\u662f\u4e00\u4e2a\u7a0b\u5e8f\u7684\u5165\u53e3<br \/>\n\u6bcf\u4e2a\u7a0b\u5e8f\u90fd\u5fc5\u987b\u6709\u8fd9\u4e48\u4e00\u4e2a\u51fd\u6570<br \/>\n\u6709\u4e14\u4ec5\u6709\u4e00\u4e2a<br \/>\n*\/<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p><span class=\"token comment\">\/\/17\u884c\u4ee3\u7801\u542b\u4e49\u5c31\u662f\u5728\u5c4f\u5e55\u4e2d\u8f93\u51faHello World<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;Hello World&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h5>1.3 \u53d8\u91cf<\/h5>\n<p>\u4f5c\u7528&#xff1a;\u7ed9\u4e00\u6bb5\u6307\u5b9a\u7684\u5185\u5b58\u7a7a\u95f4\u8d77\u540d&#xff0c;\u65b9\u4fbf\u64cd\u4f5c\u8fd9\u6bb5\u5185\u5b58 \u8bed\u6cd5&#xff1a;\u6570\u636e\u7c7b\u578b \u53d8\u91cf\u540d &#061; \u521d\u59cb\u503c;<\/p>\n<p>\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/\u53d8\u91cf\u521b\u5efa\u7684\u8bed\u6cd5&#xff1a;\u6570\u636e\u7c7b\u578b \u53d8\u91cf\u540d &#061; \u53d8\u91cf\u521d\u59cb\u503c<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> a <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;a &#061; &#034;<\/span>  <span class=\"token operator\">&lt;&lt;<\/span> a <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u6ce8\u610f&#xff1a;C&#043;&#043;\u5728\u521b\u5efa\u53d8\u91cf\u65f6&#xff0c;\u5fc5\u987b\u7ed9\u53d8\u91cf\u4e00\u4e2a\u521d\u59cb\u503c&#xff0c;\u5426\u5219\u4f1a\u62a5\u9519<\/p>\n<h5>1.4 \u5e38\u91cf<\/h5>\n<p>\u4f5c\u7528&#xff1a;\u7528\u4e8e\u8bb0\u5f55\u7a0b\u5e8f\u4e2d\u4e0d\u53ef\u66f4\u6539\u7684\u6570\u636e<\/p>\n<p>C&#043;&#043;\u5b9a\u4e49\u5e38\u91cf\u4e24\u79cd\u65b9\u5f0f&#xff1a;<\/p>\n<ul>\n<li>#define \u5b8f\u5e38\u91cf&#xff1a; #define \u5e38\u91cf\u540d \u5e38\u91cf\u503c \u901a\u5e38\u5728\u6587\u4ef6\u4e0a\u65b9\u5b9a\u4e49&#xff0c;\u8868\u793a\u4e00\u4e2a\u5e38\u91cf<\/li>\n<li>const\u4fee\u9970\u7684\u53d8\u91cf const \u6570\u636e\u7c7b\u578b \u5e38\u91cf\u540d &#061; \u5e38\u91cf\u503c \u901a\u5e38\u5728\u53d8\u91cf\u5b9a\u4e49\u524d\u52a0\u5173\u952e\u5b57const&#xff0c;\u4fee\u9970\u8be5\u53d8\u91cf\u4e3a\u5e38\u91cf&#xff0c;\u4e0d\u53ef\u4fee\u6539<\/li>\n<\/ul>\n<p>\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u5e38\u91cf\u7684\u5b9a\u4e49\u65b9\u5f0f<\/span><br \/>\n<span class=\"token comment\">\/\/1\u3001#define \u5b8f\u5e38\u91cf<\/span><br \/>\n<span class=\"token comment\">\/\/2\u3001const\u4fee\u9970\u7684\u53d8\u91cf<\/span><\/p>\n<p><span class=\"token comment\">\/\/1\u3001#define \u5b8f\u5e38\u91cf<\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">define<\/span> <span class=\"token macro-name\">Day<\/span> <span class=\"token expression\"><span class=\"token number\">7<\/span><\/span><\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/Day &#061; 14; \/\/\u9519\u8bef&#xff0c;Day\u662f\u5e38\u91cf&#xff0c;\u4e00\u65e6\u4fee\u6539\u5c31\u4f1a\u62a5\u9519<\/span><br \/>\n    cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u4e00\u5468\u603b\u5171\u6709&#xff1a;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> Day <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034; \u5929&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/2\u3001const\u4fee\u9970\u7684\u53d8\u91cf<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">int<\/span> month <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">12<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/month &#061; 24;\/\/\u9519\u8bef&#xff0c;const\u4fee\u9970\u7684\u53d8\u91cf\u4e5f\u79f0\u4e3a\u5e38\u91cf<\/span><\/p>\n<p>    cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u4e00\u5e74\u603b\u5171\u6709&#xff1a; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> month <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034; \u4e2a\u6708\u4efd&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h5>1.5 \u5173\u952e\u5b57<\/h5>\n<p>\u4f5c\u7528&#xff1a;\u5173\u952e\u5b57\u662fC&#043;&#043;\u4e2d\u9884\u5148\u4fdd\u7559\u7684\u5355\u8bcd&#xff08;\u6807\u8bc6\u7b26&#xff09;<\/p>\n<ul>\n<li>\u5728\u5b9a\u4e49\u53d8\u91cf\u6216\u8005\u5e38\u91cf\u65f6\u5019&#xff0c;\u4e0d\u8981\u7528\u5173\u952e\u5b57<\/li>\n<\/ul>\n<p>C&#043;&#043;\u5173\u952e\u5b57\u5982\u4e0b&#xff1a;<\/p>\n<table>\n<tr>asmdoifreturntypedef<\/tr>\n<tbody>\n<tr>\n<td>auto<\/td>\n<td>double<\/td>\n<td>inline<\/td>\n<td>short<\/td>\n<td>typeid<\/td>\n<\/tr>\n<tr>\n<td>bool<\/td>\n<td>dynamic_cast<\/td>\n<td>int<\/td>\n<td>signed<\/td>\n<td>typename<\/td>\n<\/tr>\n<tr>\n<td>break<\/td>\n<td>else<\/td>\n<td>long<\/td>\n<td>sizeof<\/td>\n<td>union<\/td>\n<\/tr>\n<tr>\n<td>case<\/td>\n<td>enum<\/td>\n<td>mutable<\/td>\n<td>static<\/td>\n<td>unsigned<\/td>\n<\/tr>\n<tr>\n<td>catch<\/td>\n<td>explicit<\/td>\n<td>namespace<\/td>\n<td>static_cast<\/td>\n<td>using<\/td>\n<\/tr>\n<tr>\n<td>char<\/td>\n<td>export<\/td>\n<td>new<\/td>\n<td>struct<\/td>\n<td>virtual<\/td>\n<\/tr>\n<tr>\n<td>class<\/td>\n<td>extern<\/td>\n<td>operator<\/td>\n<td>switch<\/td>\n<td>void<\/td>\n<\/tr>\n<tr>\n<td>const<\/td>\n<td>false<\/td>\n<td>private<\/td>\n<td>template<\/td>\n<td>volatile<\/td>\n<\/tr>\n<tr>\n<td>const_cast<\/td>\n<td>float<\/td>\n<td>protected<\/td>\n<td>this<\/td>\n<td>wchar_t<\/td>\n<\/tr>\n<tr>\n<td>continue<\/td>\n<td>for<\/td>\n<td>public<\/td>\n<td>throw<\/td>\n<td>while<\/td>\n<\/tr>\n<tr>\n<td>default<\/td>\n<td>friend<\/td>\n<td>register<\/td>\n<td>true<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td>delete<\/td>\n<td>goto<\/td>\n<td>reinterpret_cast<\/td>\n<td>try<\/td>\n<td><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u63d0\u793a&#xff1a;\u5728\u7ed9\u53d8\u91cf\u6216\u8005\u5e38\u91cf\u8d77\u540d\u79f0\u65f6\u5019&#xff0c;\u4e0d\u8981\u7528C&#043;&#043;\u5f97\u5173\u952e\u5b57&#xff0c;\u5426\u5219\u4f1a\u4ea7\u751f\u6b67\u4e49\u3002<\/p>\n<p>\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/\u521b\u5efa\u53d8\u91cf&#xff1a;\u6570\u636e\u7c7b\u578b \u53d8\u91cf\u540d &#061; \u53d8\u91cf\u521d\u59cb\u503c<\/span><br \/>\n    <span class=\"token comment\">\/\/\u4e0d\u8981\u7528\u5173\u952e\u5b57\u7ed9\u53d8\u91cf\u6216\u5e38\u91cf\u8d77\u540d\u79f0<\/span><br \/>\n    <span class=\"token comment\">\/\/int int &#061; 10;    \u9519\u8bef&#xff0c;\u7b2c\u4e8c\u4e2aint\u662f\u5173\u952e\u5b57&#xff0c;\u4e0d\u53ef\u4ee5\u4f5c\u4e3a\u53d8\u91cf\u7684\u540d\u79f0<\/span><br \/>\n    <span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h5>1.6 \u6807\u8bc6\u7b26\u547d\u540d\u89c4\u5219<\/h5>\n<p>\u4f5c\u7528&#xff1a;C&#043;&#043;\u89c4\u5b9a\u7ed9\u6807\u8bc6\u7b26&#xff08;\u53d8\u91cf\u3001\u5e38\u91cf&#xff09;\u547d\u540d\u65f6&#xff0c;\u6709\u4e00\u5957\u81ea\u5df1\u7684\u89c4\u5219<\/p>\n<ul>\n<li>\u6807\u8bc6\u7b26\u4e0d\u80fd\u662f\u5173\u952e\u5b57<\/li>\n<li>\u6807\u8bc6\u7b26\u53ea\u80fd\u7531\u5b57\u6bcd\u3001\u6570\u5b57\u3001\u4e0b\u5212\u7ebf\u7ec4\u6210<\/li>\n<li>\u7b2c\u4e00\u4e2a\u5b57\u7b26\u5fc5\u987b\u4e3a\u5b57\u6bcd\u6216\u4e0b\u5212\u7ebf<\/li>\n<li>\u6807\u8bc6\u7b26\u4e2d\u5b57\u6bcd\u533a\u5206\u5927\u5c0f\u5199<\/li>\n<\/ul>\n<p>\u5efa\u8bae&#xff1a;\u7ed9\u6807\u8bc6\u7b26\u547d\u540d\u65f6&#xff0c;\u4e89\u53d6\u505a\u5230\u89c1\u540d\u77e5\u610f\u7684\u6548\u679c&#xff0c;\u65b9\u4fbf\u81ea\u5df1\u548c\u4ed6\u4eba\u7684\u9605\u8bfb<\/p>\n<p>\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u6807\u8bc6\u7b26\u547d\u540d\u89c4\u5219<\/span><br \/>\n<span class=\"token comment\">\/\/1\u3001\u6807\u8bc6\u7b26\u4e0d\u53ef\u4ee5\u662f\u5173\u952e\u5b57<\/span><br \/>\n<span class=\"token comment\">\/\/2\u3001\u6807\u8bc6\u7b26\u662f\u7531\u5b57\u6bcd\u3001\u6570\u5b57\u3001\u4e0b\u5212\u7ebf\u6784\u6210<\/span><br \/>\n<span class=\"token comment\">\/\/3\u3001\u6807\u8bc6\u7b26\u7b2c\u4e00\u4e2a\u5b57\u7b26\u53ea\u80fd\u662f\u5b57\u6bcd\u6216\u4e0b\u5212\u7ebf<\/span><br \/>\n<span class=\"token comment\">\/\/4\u3001\u6807\u8bc6\u7b26\u662f\u533a\u5206\u5927\u5c0f\u5199\u7684<\/span><br \/>\n<span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/1\u3001\u6807\u8bc6\u7b26\u4e0d\u53ef\u4ee5\u662f\u5173\u952e\u5b57<\/span><br \/>\n    <span class=\"token comment\">\/\/int int &#061; 10;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/2\u3001\u6807\u8bc6\u7b26\u662f\u7531\u5b57\u6bcd\u3001\u6570\u5b57\u3001\u4e0b\u5212\u7ebf\u6784\u6210<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> abc <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> _abc <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">20<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> _123abc <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">30<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/3\u3001\u6807\u8bc6\u7b26\u7b2c\u4e00\u4e2a\u5b57\u7b26\u53ea\u80fd\u662f\u5b57\u6bcd\u6216\u4e0b\u5212\u7ebf<\/span><br \/>\n    <span class=\"token comment\">\/\/int 123abc &#061; 40;<\/span><br \/>\n    <span class=\"token comment\">\/\/4\u3001\u6807\u8bc6\u7b26\u662f\u533a\u5206\u5927\u5c0f\u5199\u7684<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> aaa <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">100<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/cout &lt;&lt; AAA &lt;&lt; endl;    \/\/AAA \u548c aaa\u4e0d\u662f\u540c\u4e00\u4e2a\u540d\u79f0<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/\u5efa\u8bae&#xff1a;\u7ed9\u53d8\u91cf\u8d77\u540d\u7684\u65f6\u5019&#xff0c;\u6700\u597d\u80fd\u591f\u505a\u5230\u89c1\u540d\u77e5\u610f<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> num1 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> num2 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">20<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> sum <span class=\"token operator\">&#061;<\/span> num1 <span class=\"token operator\">&#043;<\/span> num2<span class=\"token punctuation\">;<\/span><br \/>\n    cout <span class=\"token operator\">&lt;&lt;<\/span> sum <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>2 \u6570\u636e\u7c7b\u578b<\/h4>\n<p>C&#043;&#043;\u89c4\u5b9a\u5728\u521b\u5efa\u4e00\u4e2a\u53d8\u91cf\u6216\u8005\u5e38\u91cf\u65f6&#xff0c;\u5fc5\u987b\u8981\u6307\u5b9a\u51fa\u76f8\u5e94\u7684\u6570\u636e\u7c7b\u578b&#xff0c;\u5426\u5219\u65e0\u6cd5\u7ed9\u53d8\u91cf\u5206\u914d\u5185\u5b58<\/p>\n<h5>2.1 \u6574\u578b<\/h5>\n<p>\u4f5c\u7528&#xff1a;\u6574\u578b\u53d8\u91cf\u8868\u793a\u7684\u662f\u6574\u6570\u7c7b\u578b\u7684\u6570\u636e<\/p>\n<p>C&#043;&#043;\u4e2d\u80fd\u591f\u8868\u793a\u6574\u578b\u7684\u7c7b\u578b\u6709\u4ee5\u4e0b\u51e0\u79cd\u65b9\u5f0f&#xff0c;\u533a\u522b\u5728\u4e8e\u6240\u5360\u5185\u5b58\u7a7a\u95f4\u4e0d\u540c&#xff1a;<\/p>\n<table>\n<tr>\u6570\u636e\u7c7b\u578b\u5360\u7528\u7a7a\u95f4\u53d6\u503c\u8303\u56f4<\/tr>\n<tbody>\n<tr>\n<td>short(\u77ed\u6574\u578b)<\/td>\n<td>2\u5b57\u8282<\/td>\n<td>(-2^15 ~ 2^15- 1)<\/td>\n<\/tr>\n<tr>\n<td>int(\u6574\u578b)<\/td>\n<td>4\u5b57\u8282<\/td>\n<td>(-2^31 ~ 2^31- 1)<\/td>\n<\/tr>\n<tr>\n<td>long(\u957f\u6574\u578b)<\/td>\n<td>Windows\u4e3a4\u5b57\u8282&#xff0c;Linux\u4e3a4\u5b57\u8282(32\u4f4d)&#xff0c;8\u5b57\u8282(64\u4f4d)<\/td>\n<td>(-2^31 ~ 2^31- 1)<\/td>\n<\/tr>\n<tr>\n<td>long long(\u957f\u957f\u6574\u578b)<\/td>\n<td>8\u5b57\u8282<\/td>\n<td>(-2^63 ~ 2^63- 1)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/\u6574\u578b<\/span><br \/>\n    <span class=\"token comment\">\/\/1\u3001\u77ed\u6574\u578b (-32768 ~ 32767)<\/span><br \/>\n    <span class=\"token keyword\">short<\/span> num1 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">32768<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/2\u3001\u6574\u578b<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> num2 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">32768<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/3\u3001\u957f\u6574\u578b<\/span><br \/>\n    <span class=\"token keyword\">long<\/span> num3 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/4\u3001\u957f\u957f\u6574\u578b<\/span><br \/>\n    <span class=\"token keyword\">long<\/span> <span class=\"token keyword\">long<\/span> num4 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;num1 &#061; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> num1 <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n    cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;num2 &#061; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> num2 <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n    cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;num3 &#061; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> num3 <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n    cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;num4 &#061; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> num4 <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h5>2.2 sizeof\u5173\u952e\u5b57<\/h5>\n<p>\u4f5c\u7528&#xff1a;\u5229\u7528sizeof\u5173\u952e\u5b57\u53ef\u4ee5\u7edf\u8ba1\u6570\u636e\u7c7b\u578b\u6240\u5360\u5185\u5b58\u5927\u5c0f<\/p>\n<p>\u8bed\u6cd5&#xff1a; sizeof( \u6570\u636e\u7c7b\u578b \/ \u53d8\u91cf)<\/p>\n<p>\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/\u6574\u578b&#xff1a; short  &#xff08;2&#xff09; int &#xff08;4&#xff09; long &#xff08;4&#xff09;  longlong &#xff08;8&#xff09;<\/span><br \/>\n    <span class=\"token comment\">\/\/\u53ef\u4ee5\u5229\u7528sizeof\u6c42\u51fa\u6570\u636e\u7c7b\u578b\u5360\u7528\u5185\u5b58\u5927\u5c0f<\/span><br \/>\n    <span class=\"token comment\">\/\/\u8bed\u6cd5&#xff1a;sizeof&#xff08; \u6570\u636e\u7c7b\u578b \/\u53d8\u91cf &#xff09;<\/span><\/p>\n<p>    <span class=\"token keyword\">short<\/span> num1 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;short\u5360\u7528\u5185\u5b58\u7a7a\u95f4\u4e3a&#xff1a; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span>num1<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/sizeof(short)<\/span><\/p>\n<p>    <span class=\"token keyword\">int<\/span> num2 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;int\u5360\u7528\u5185\u5b58\u7a7a\u95f4\u4e3a&#xff1a; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span>num2<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/sizeof(int)<\/span><\/p>\n<p>    <span class=\"token keyword\">long<\/span> num3 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;long\u5360\u7528\u5185\u5b58\u7a7a\u95f4\u4e3a&#xff1a; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span>num3<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/sizeof(long)<\/span><\/p>\n<p>    <span class=\"token keyword\">long<\/span> <span class=\"token keyword\">long<\/span> num4 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;long long\u5360\u7528\u5185\u5b58\u7a7a\u95f4\u4e3a&#xff1a; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span>num4<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/sizeof(long long)<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/\u6574\u578b\u5927\u5c0f\u6bd4\u8f83<\/span><br \/>\n    <span class=\"token comment\">\/\/ short &lt; int &lt;&#061; long &lt;&#061; long long<\/span><\/p>\n<p>    <span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u6574\u578b\u7ed3\u8bba&#xff1a;short &lt; int &lt;&#061; long &lt;&#061; long long<\/p>\n<h5>2.3 \u5b9e\u578b&#xff08;\u6d6e\u70b9\u578b&#xff09;<\/h5>\n<p>\u4f5c\u7528&#xff1a;\u7528\u4e8e\u8868\u793a\u5c0f\u6570<\/p>\n<p>\u6d6e\u70b9\u578b\u53d8\u91cf\u5206\u4e3a\u4e24\u79cd&#xff1a;<\/p>\n<li>\u5355\u7cbe\u5ea6float<\/li>\n<li>\u53cc\u7cbe\u5ea6double<\/li>\n<p>\u4e24\u8005\u7684\u533a\u522b\u5728\u4e8e\u8868\u793a\u7684\u6709\u6548\u6570\u5b57\u8303\u56f4\u4e0d\u540c\u3002<\/p>\n<table>\n<tr>\u6570\u636e\u7c7b\u578b\u5360\u7528\u7a7a\u95f4\u6709\u6548\u6570\u5b57\u8303\u56f4<\/tr>\n<tbody>\n<tr>\n<td>float<\/td>\n<td>4\u5b57\u8282<\/td>\n<td>7\u4f4d\u6709\u6548\u6570\u5b57<\/td>\n<\/tr>\n<tr>\n<td>double<\/td>\n<td>8\u5b57\u8282<\/td>\n<td>15 ~ 16\u4f4d\u6709\u6548\u6570\u5b57<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/1\u3001\u5355\u7cbe\u5ea6 float<\/span><br \/>\n    <span class=\"token comment\">\/\/2\u3001\u53cc\u7cbe\u5ea6 double<\/span><br \/>\n    <span class=\"token comment\">\/\/\u9ed8\u8ba4\u60c5\u51b5\u4e0b \u8f93\u51fa\u4e00\u4e2a\u5c0f\u6570&#xff0c;\u4f1a\u663e\u793a\u51fa6\u4f4d\u6709\u6548\u6570\u5b57<\/span><br \/>\n    <span class=\"token keyword\">float<\/span> f1 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">3.1415926f<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;f1 &#061; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> f1 <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">double<\/span> d1 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">3.1415926<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;d1 &#061; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> d1 <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/\u7edf\u8ba1float\u548cdouble\u5360\u7528\u5185\u5b58\u7a7a\u95f4<\/span><br \/>\n    cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;float\u5360\u7528\u5185\u5b58\u7a7a\u95f4\u4e3a&#xff1a; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">float<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/4\u5b57\u8282<\/span><\/p>\n<p>    cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;double\u5360\u7528\u5185\u5b58\u7a7a\u95f4\u4e3a&#xff1a; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">double<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/8\u5b57\u8282<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/\u79d1\u5b66\u8ba1\u6570\u6cd5<\/span><br \/>\n    <span class=\"token keyword\">float<\/span> f2 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">3e2<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/3 * 10 ~ 2&#xff1b;<\/span><br \/>\n    cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;f2 &#061; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> f2 <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">float<\/span> f3 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">3e-2<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/3 * 0.1 ~ 2<\/span><br \/>\n    cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;f3 &#061; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> f3 <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h5>2.4 \u5b57\u7b26\u578b<\/h5>\n<p>\u4f5c\u7528&#xff1a;\u5b57\u7b26\u578b\u53d8\u91cf\u7528\u4e8e\u663e\u793a\u5355\u4e2a\u5b57\u7b26 \u8bed\u6cd5&#xff1a;char ch &#061; \u2018a\u2019;<\/p>\n<p>\u6ce8\u610f1&#xff1a;\u5728\u663e\u793a\u5b57\u7b26\u578b\u53d8\u91cf\u65f6&#xff0c;\u7528\u5355\u5f15\u53f7\u5c06\u5b57\u7b26\u62ec\u8d77\u6765&#xff0c;\u4e0d\u8981\u7528\u53cc\u5f15\u53f7 \u6ce8\u610f2&#xff1a;\u5355\u5f15\u53f7\u5185\u53ea\u80fd\u6709\u4e00\u4e2a\u5b57\u7b26&#xff0c;\u4e0d\u53ef\u4ee5\u662f\u5b57\u7b26\u4e32<\/p>\n<ul>\n<li>C\u548cC&#043;&#043;\u4e2d\u5b57\u7b26\u578b\u53d8\u91cf\u53ea\u5360\u75281\u4e2a\u5b57\u8282\u3002<\/li>\n<li>\u5b57\u7b26\u578b\u53d8\u91cf\u5e76\u4e0d\u662f\u628a\u5b57\u7b26\u672c\u8eab\u653e\u5230\u5185\u5b58\u4e2d\u5b58\u50a8&#xff0c;\u800c\u662f\u5c06\u5bf9\u5e94\u7684ASCII\u7f16\u7801\u653e\u5165\u5230\u5b58\u50a8\u5355\u5143<\/li>\n<\/ul>\n<p>\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p><span class=\"token comment\">\/\/1\u3001\u5b57\u7b26\u578b\u53d8\u91cf\u521b\u5efa\u65b9\u5f0f<\/span><br \/>\n<span class=\"token keyword\">char<\/span> ch <span class=\"token operator\">&#061;<\/span> <span class=\"token char\">&#039;a&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> ch <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/2\u3001\u5b57\u7b26\u578b\u53d8\u91cf\u6240\u5360\u5185\u5b58\u5927\u5c0f<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;char\u5b57\u7b26\u578b\u53d8\u91cf\u6240\u5360\u5185\u5b58: &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">char<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/3\u3001\u5b57\u7b26\u578b\u53d8\u91cf\u5e38\u89c1\u9519\u8bef<\/span><br \/>\n<span class=\"token comment\">\/\/char ch2 &#061; &#034;b&#034;; \/\/\u521b\u5efa\u5b57\u7b26\u578b\u53d8\u91cf\u65f6\u5019&#xff0c;\u8981\u7528\u5355\u5f15\u53f7<\/span><br \/>\n<span class=\"token comment\">\/\/char ch2 &#061; &#039;abcdef&#039;; \/\/\u521b\u5efa\u5b57\u7b26\u578b\u53d8\u91cf\u65f6\u5019&#xff0c;\u5355\u5f15\u53f7\u5185\u53ea\u80fd\u6709\u4e00\u4e2a\u5b57\u7b26<\/span><\/p>\n<p><span class=\"token comment\">\/\/4\u3001\u5b57\u7b26\u578b\u53d8\u91cf\u5bf9\u5e94ASCII\u7f16\u7801<\/span><br \/>\n<span class=\"token comment\">\/\/ a &#8211; 97<\/span><br \/>\n<span class=\"token comment\">\/\/ A &#8211; 65<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">)<\/span>ch <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>ASCII\u7801\u8868\u683c&#xff1a;<\/p>\n<table>\n<tr>ASCII\u503c\u63a7\u5236\u5b57\u7b26ASCII\u503c\u5b57\u7b26ASCII\u503c\u5b57\u7b26ASCII\u503c\u5b57\u7b26<\/tr>\n<tbody>\n<tr>\n<td>0<\/td>\n<td>NUT<\/td>\n<td>32<\/td>\n<td>(space)<\/td>\n<td>64<\/td>\n<td>&#064;<\/td>\n<td>96<\/td>\n<td>\u3001<\/td>\n<\/tr>\n<tr>\n<td>1<\/td>\n<td>SOH<\/td>\n<td>33<\/td>\n<td>!<\/td>\n<td>65<\/td>\n<td>A<\/td>\n<td>97<\/td>\n<td>a<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>STX<\/td>\n<td>34<\/td>\n<td>&#034;<\/td>\n<td>66<\/td>\n<td>B<\/td>\n<td>98<\/td>\n<td>b<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>ETX<\/td>\n<td>35<\/td>\n<td>#<\/td>\n<td>67<\/td>\n<td>C<\/td>\n<td>99<\/td>\n<td>c<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>EOT<\/td>\n<td>36<\/td>\n<td>$<\/td>\n<td>68<\/td>\n<td>D<\/td>\n<td>100<\/td>\n<td>d<\/td>\n<\/tr>\n<tr>\n<td>5<\/td>\n<td>ENQ<\/td>\n<td>37<\/td>\n<td>%<\/td>\n<td>69<\/td>\n<td>E<\/td>\n<td>101<\/td>\n<td>e<\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td>ACK<\/td>\n<td>38<\/td>\n<td>&amp;<\/td>\n<td>70<\/td>\n<td>F<\/td>\n<td>102<\/td>\n<td>f<\/td>\n<\/tr>\n<tr>\n<td>7<\/td>\n<td>BEL<\/td>\n<td>39<\/td>\n<td>,<\/td>\n<td>71<\/td>\n<td>G<\/td>\n<td>103<\/td>\n<td>g<\/td>\n<\/tr>\n<tr>\n<td>8<\/td>\n<td>BS<\/td>\n<td>40<\/td>\n<td>(<\/td>\n<td>72<\/td>\n<td>H<\/td>\n<td>104<\/td>\n<td>h<\/td>\n<\/tr>\n<tr>\n<td>9<\/td>\n<td>HT<\/td>\n<td>41<\/td>\n<td>)<\/td>\n<td>73<\/td>\n<td>I<\/td>\n<td>105<\/td>\n<td>i<\/td>\n<\/tr>\n<tr>\n<td>10<\/td>\n<td>LF<\/td>\n<td>42<\/td>\n<td>*<\/td>\n<td>74<\/td>\n<td>J<\/td>\n<td>106<\/td>\n<td>j<\/td>\n<\/tr>\n<tr>\n<td>11<\/td>\n<td>VT<\/td>\n<td>43<\/td>\n<td>&#043;<\/td>\n<td>75<\/td>\n<td>K<\/td>\n<td>107<\/td>\n<td>k<\/td>\n<\/tr>\n<tr>\n<td>12<\/td>\n<td>FF<\/td>\n<td>44<\/td>\n<td>,<\/td>\n<td>76<\/td>\n<td>L<\/td>\n<td>108<\/td>\n<td>l<\/td>\n<\/tr>\n<tr>\n<td>13<\/td>\n<td>CR<\/td>\n<td>45<\/td>\n<td>&#8211;<\/td>\n<td>77<\/td>\n<td>M<\/td>\n<td>109<\/td>\n<td>m<\/td>\n<\/tr>\n<tr>\n<td>14<\/td>\n<td>SO<\/td>\n<td>46<\/td>\n<td>.<\/td>\n<td>78<\/td>\n<td>N<\/td>\n<td>110<\/td>\n<td>n<\/td>\n<\/tr>\n<tr>\n<td>15<\/td>\n<td>SI<\/td>\n<td>47<\/td>\n<td>\/<\/td>\n<td>79<\/td>\n<td>O<\/td>\n<td>111<\/td>\n<td>o<\/td>\n<\/tr>\n<tr>\n<td>16<\/td>\n<td>DLE<\/td>\n<td>48<\/td>\n<td>0<\/td>\n<td>80<\/td>\n<td>P<\/td>\n<td>112<\/td>\n<td>p<\/td>\n<\/tr>\n<tr>\n<td>17<\/td>\n<td>DCI<\/td>\n<td>49<\/td>\n<td>1<\/td>\n<td>81<\/td>\n<td>Q<\/td>\n<td>113<\/td>\n<td>q<\/td>\n<\/tr>\n<tr>\n<td>18<\/td>\n<td>DC2<\/td>\n<td>50<\/td>\n<td>2<\/td>\n<td>82<\/td>\n<td>R<\/td>\n<td>114<\/td>\n<td>r<\/td>\n<\/tr>\n<tr>\n<td>19<\/td>\n<td>DC3<\/td>\n<td>51<\/td>\n<td>3<\/td>\n<td>83<\/td>\n<td>S<\/td>\n<td>115<\/td>\n<td>s<\/td>\n<\/tr>\n<tr>\n<td>20<\/td>\n<td>DC4<\/td>\n<td>52<\/td>\n<td>4<\/td>\n<td>84<\/td>\n<td>T<\/td>\n<td>116<\/td>\n<td>t<\/td>\n<\/tr>\n<tr>\n<td>21<\/td>\n<td>NAK<\/td>\n<td>53<\/td>\n<td>5<\/td>\n<td>85<\/td>\n<td>U<\/td>\n<td>117<\/td>\n<td>u<\/td>\n<\/tr>\n<tr>\n<td>22<\/td>\n<td>SYN<\/td>\n<td>54<\/td>\n<td>6<\/td>\n<td>86<\/td>\n<td>V<\/td>\n<td>118<\/td>\n<td>v<\/td>\n<\/tr>\n<tr>\n<td>23<\/td>\n<td>TB<\/td>\n<td>55<\/td>\n<td>7<\/td>\n<td>87<\/td>\n<td>W<\/td>\n<td>119<\/td>\n<td>w<\/td>\n<\/tr>\n<tr>\n<td>24<\/td>\n<td>CAN<\/td>\n<td>56<\/td>\n<td>8<\/td>\n<td>88<\/td>\n<td>X<\/td>\n<td>120<\/td>\n<td>x<\/td>\n<\/tr>\n<tr>\n<td>25<\/td>\n<td>EM<\/td>\n<td>57<\/td>\n<td>9<\/td>\n<td>89<\/td>\n<td>Y<\/td>\n<td>121<\/td>\n<td>y<\/td>\n<\/tr>\n<tr>\n<td>26<\/td>\n<td>SUB<\/td>\n<td>58<\/td>\n<td>:<\/td>\n<td>90<\/td>\n<td>Z<\/td>\n<td>122<\/td>\n<td>z<\/td>\n<\/tr>\n<tr>\n<td>27<\/td>\n<td>ESC<\/td>\n<td>59<\/td>\n<td>;<\/td>\n<td>91<\/td>\n<td>[<\/td>\n<td>123<\/td>\n<td>{<\/td>\n<\/tr>\n<tr>\n<td>28<\/td>\n<td>FS<\/td>\n<td>60<\/td>\n<td>&lt;<\/td>\n<td>92<\/td>\n<td>\\\\<\/td>\n<td>124<\/td>\n<td>|<\/td>\n<\/tr>\n<tr>\n<td>29<\/td>\n<td>GS<\/td>\n<td>61<\/td>\n<td>&#061;<\/td>\n<td>93<\/td>\n<td>]<\/td>\n<td>125<\/td>\n<td>}<\/td>\n<\/tr>\n<tr>\n<td>30<\/td>\n<td>RS<\/td>\n<td>62<\/td>\n<td>&gt;<\/td>\n<td>94<\/td>\n<td>^<\/td>\n<td>126<\/td>\n<td>&#096;<\/td>\n<\/tr>\n<tr>\n<td>31<\/td>\n<td>US<\/td>\n<td>63<\/td>\n<td>?<\/td>\n<td>95<\/td>\n<td>_<\/td>\n<td>127<\/td>\n<td>DEL<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>ASCII \u7801\u5927\u81f4\u7531\u4ee5\u4e0b\u4e24\u90e8\u5206\u7ec4\u6210&#xff1a;<\/p>\n<ul>\n<li>ASCII \u975e\u6253\u5370\u63a7\u5236\u5b57\u7b26&#xff1a; ASCII \u8868\u4e0a\u7684\u6570\u5b57 0-31 \u5206\u914d\u7ed9\u4e86\u63a7\u5236\u5b57\u7b26&#xff0c;\u7528\u4e8e\u63a7\u5236\u50cf\u6253\u5370\u673a\u7b49\u4e00\u4e9b\u5916\u56f4\u8bbe\u5907\u3002<\/li>\n<li>ASCII \u6253\u5370\u5b57\u7b26&#xff1a;\u6570\u5b57 32-126 \u5206\u914d\u7ed9\u4e86\u80fd\u5728\u952e\u76d8\u4e0a\u627e\u5230\u7684\u5b57\u7b26&#xff0c;\u5f53\u67e5\u770b\u6216\u6253\u5370\u6587\u6863\u65f6\u5c31\u4f1a\u51fa\u73b0\u3002<\/li>\n<\/ul>\n<h5>2.5 \u8f6c\u4e49\u5b57\u7b26<\/h5>\n<p>\u4f5c\u7528&#xff1a;\u7528\u4e8e\u8868\u793a\u4e00\u4e9b\u4e0d\u80fd\u663e\u793a\u51fa\u6765\u7684ASCII\u5b57\u7b26<\/p>\n<p>\u73b0\u9636\u6bb5\u6211\u4eec\u5e38\u7528\u7684\u8f6c\u4e49\u5b57\u7b26\u6709&#xff1a;\\\\n \\\\\\\\ \\\\t<\/p>\n<table>\n<tr>\u8f6c\u4e49\u5b57\u7b26\u542b\u4e49ASCII\u7801\u503c&#xff08;\u5341\u8fdb\u5236&#xff09;<\/tr>\n<tbody>\n<tr>\n<td>\\\\a<\/td>\n<td>\u8b66\u62a5<\/td>\n<td>007<\/td>\n<\/tr>\n<tr>\n<td>\\\\b<\/td>\n<td>\u9000\u683c(BS) &#xff0c;\u5c06\u5f53\u524d\u4f4d\u7f6e\u79fb\u5230\u524d\u4e00\u5217<\/td>\n<td>008<\/td>\n<\/tr>\n<tr>\n<td>\\\\f<\/td>\n<td>\u6362\u9875(FF)&#xff0c;\u5c06\u5f53\u524d\u4f4d\u7f6e\u79fb\u5230\u4e0b\u9875\u5f00\u5934<\/td>\n<td>012<\/td>\n<\/tr>\n<tr>\n<td>\\\\n<\/td>\n<td>\u6362\u884c(LF) &#xff0c;\u5c06\u5f53\u524d\u4f4d\u7f6e\u79fb\u5230\u4e0b\u4e00\u884c\u5f00\u5934<\/td>\n<td>010<\/td>\n<\/tr>\n<tr>\n<td>\\\\r<\/td>\n<td>\u56de\u8f66(CR) &#xff0c;\u5c06\u5f53\u524d\u4f4d\u7f6e\u79fb\u5230\u672c\u884c\u5f00\u5934<\/td>\n<td>013<\/td>\n<\/tr>\n<tr>\n<td>\\\\t<\/td>\n<td>\u6c34\u5e73\u5236\u8868(HT) &#xff08;\u8df3\u5230\u4e0b\u4e00\u4e2aTAB\u4f4d\u7f6e&#xff09;<\/td>\n<td>009<\/td>\n<\/tr>\n<tr>\n<td>\\\\v<\/td>\n<td>\u5782\u76f4\u5236\u8868(VT)<\/td>\n<td>011<\/td>\n<\/tr>\n<tr>\n<td>\\\\\\\\<\/td>\n<td>\u4ee3\u8868\u4e00\u4e2a\u53cd\u659c\u7ebf\u5b57\u7b26&#034;\\\\&#034;<\/td>\n<td>092<\/td>\n<\/tr>\n<tr>\n<td>\u2019<\/td>\n<td>\u4ee3\u8868\u4e00\u4e2a\u5355\u5f15\u53f7&#xff08;\u6487\u53f7&#xff09;\u5b57\u7b26<\/td>\n<td>039<\/td>\n<\/tr>\n<tr>\n<td>&#034;<\/td>\n<td>\u6c34\u5e73\u5236\u8868(HT) &#xff08;\u8df3\u5230\u4e0b\u4e00\u4e2aTAB\u4f4d\u7f6e&#xff09;<\/td>\n<td>034<\/td>\n<\/tr>\n<tr>\n<td>\\\\?<\/td>\n<td>\u4ee3\u8868\u4e00\u4e2a\u95ee\u53f7<\/td>\n<td>063<\/td>\n<\/tr>\n<tr>\n<td>\\\\0<\/td>\n<td>\u6570\u5b570<\/td>\n<td>000<\/td>\n<\/tr>\n<tr>\n<td>\\\\ddd<\/td>\n<td>8\u8fdb\u5236\u8f6c\u4e49\u5b57\u7b26&#xff0c;d\u8303\u56f40~7<\/td>\n<td>3\u4f4d8\u8fdb\u5236<\/td>\n<\/tr>\n<tr>\n<td>\\\\xhh<\/td>\n<td>16\u8fdb\u5236\u8f6c\u4e49\u5b57\u7b26&#xff0c;h\u8303\u56f40<sub>9,a<\/sub>f,A~F<\/td>\n<td>3\u4f4d16\u8fdb\u5236<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u8f6c\u4e49\u5b57\u7b26<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u6362\u884c\u7b26 \\\\n<\/span><\/p>\n<p>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;hello world\\\\n&#034;<\/span> <span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u53cd\u659c\u6760 \\\\\\\\<br \/>\n<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\\\\\\\\&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u6c34\u5e73\u5236\u8868\u7b26 \\\\t   \u4f5c\u7528&#xff1a;\u53ef\u4ee5\u6574\u9f50\u5730\u8f93\u51fa\u6570\u636e<\/span><\/p>\n<p>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;aaaa\\\\thelloworld&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;aa\\\\thelloworld&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;aaaaaa\\\\thelloworld&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h5>2.6 \u5b57\u7b26\u4e32\u578b<\/h5>\n<p>\u4f5c\u7528&#xff1a;\u7528\u4e8e\u8868\u793a\u4e00\u4e32\u5b57\u7b26<\/p>\n<p>\u4e24\u79cd\u98ce\u683c<\/p>\n<p>1\u3001C\u98ce\u683c\u5b57\u7b26\u4e32&#xff1a; char \u53d8\u91cf\u540d[] &#061; \u201c\u5b57\u7b26\u4e32\u503c\u201d \u6ce8\u610f&#xff1a;C\u98ce\u683c\u7684\u5b57\u7b26\u4e32\u8981\u7528\u53cc\u5f15\u53f7\u62ec\u8d77\u6765 2\u3001C&#043;&#043;\u98ce\u683c\u5b57\u7b26\u4e32&#xff1a; string \u53d8\u91cf\u540d &#061; \u201c\u5b57\u7b26\u4e32\u503c\u201d \u6ce8\u610f&#xff1a;C&#043;&#043;\u98ce\u683c\u5b57\u7b26\u4e32&#xff0c;\u9700\u8981\u52a0\u5165\u5934\u6587\u4ef6#include &lt;string&gt; \u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;string&gt;<\/span> <span class=\"token comment\">\/\/\u7528C&#043;&#043;\u98ce\u683c\u5b57\u7b26\u4e32\u5341\u65f6\u5019&#xff0c;\u8981\u5305\u542b\u8fd9\u4e2a\u5934\u6587\u4ef6<\/span><\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p><span class=\"token comment\">\/\/1\u3001C\u98ce\u683c\u5b57\u7b26\u4e32<\/span><br \/>\n<span class=\"token comment\">\/\/\u6ce8\u610f\u4e8b\u98791  char \u5b57\u7b26\u4e32\u540d\u540e\u9762\u8981\u52a0[]<\/span><br \/>\n<span class=\"token comment\">\/\/\u6ce8\u610f\u4e8b\u98792  \u7b49\u53f7\u540e\u9762 \u8981\u7528\u53cc\u5f15\u53f7&#034;&#034; \u5305\u542b\u8d77\u6765\u5b57\u7b26\u4e32<\/span><br \/>\n<span class=\"token keyword\">char<\/span> str<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;hello world&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> str <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/2\u3001C&#043;&#043;\u578b\u5b57\u7b26\u4e32<\/span><br \/>\n<span class=\"token comment\">\/\/\u5305\u542b\u4e00\u4e2a\u5934\u6587\u4ef6  #include &lt;string&gt;<\/span><br \/>\nstring str2 <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;hello world&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> str2 <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h5>2.7 \u5e03\u5c14\u7c7b\u578b<\/h5>\n<p>\u4f5c\u7528&#xff1a;\u5e03\u5c14\u6570\u636e\u7c7b\u578b\u4ee3\u8868\u771f\u6216\u5047\u7684\u503c<\/p>\n<p>bool\u7c7b\u578b\u53ea\u6709\u4e24\u4e2a\u503c&#xff1a;<\/p>\n<ul>\n<li>true \u2014 \u771f&#xff08;\u672c\u8d28\u662f1&#xff09;<\/li>\n<li>false \u2014\u5047&#xff08;\u672c\u8d28\u662f0&#xff09;<\/li>\n<\/ul>\n<p>bool\u7c7b\u578b\u53601\u4e2a\u5b57\u8282\u5927\u5c0f<\/p>\n<p>\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p><span class=\"token comment\">\/\/1\u3001\u521b\u5efabool\u6570\u636e\u7c7b\u578b<\/span><br \/>\n<span class=\"token keyword\">bool<\/span> flag <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/true\u4ee3\u8868\u771f<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> flag <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p>flag <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/false\u4ee3\u8868\u5047<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> flag <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u672c\u8d28\u4e0a 1\u4ee3\u8868\u771f 0\u4ee3\u8868\u5047<\/span><\/p>\n<p><span class=\"token comment\">\/\/2\u3001\u67e5\u770bbool\u7c7b\u578b\u6240\u5360\u5185\u5b58\u7a7a\u95f4<\/span><\/p>\n<p>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;bool\u7c7b\u578b\u6240\u5360\u5185\u5b58\u7a7a\u95f4&#xff1a; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">bool<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h5>2.8 \u6570\u636e\u7684\u8f93\u5165<\/h5>\n<p>\u4f5c\u7528&#xff1a;\u7528\u4e8e\u4ece\u952e\u76d8\u83b7\u53d6\u6570\u636e<\/p>\n<p>\u5173\u952e\u5b57&#xff1a;cin<\/p>\n<p>\u8bed\u6cd5&#xff1a; cin &gt;&gt; \u53d8\u91cf<\/p>\n<p>\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;string&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p><span class=\"token comment\">\/\/1\u3001\u6574\u578b<\/span><br \/>\n<span class=\"token keyword\">int<\/span> a <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u8bf7\u7ed9\u6574\u578b\u53d8\u91cfa\u8d4b\u503c&#xff1a;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\ncin <span class=\"token operator\">&gt;&gt;<\/span> a<span class=\"token punctuation\">;<\/span>    <span class=\"token comment\">\/\/ &gt;&gt;\u4e3a\u53f3\u8fd0\u7b97\u7b26<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u6574\u578b\u53d8\u91cfa &#061; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> a <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/2\u3001\u6d6e\u70b9\u578b<\/span><br \/>\n<span class=\"token keyword\">float<\/span> f <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">3.14f<\/span><span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u8bf7\u7ed9\u6d6e\u70b9\u578b\u53d8\u91cff\u8d4b\u503c&#xff1a;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\ncin <span class=\"token operator\">&gt;&gt;<\/span> f<span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u6d6e\u70b9\u578b\u53d8\u91cff &#061; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> f <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/3\u3001\u5b57\u7b26\u578b<\/span><br \/>\n<span class=\"token keyword\">char<\/span> ch <span class=\"token operator\">&#061;<\/span> <span class=\"token char\">&#039;a&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u8bf7\u7ed9\u5b57\u7b26\u578b\u53d8\u91cfch\u8d4b\u503c&#xff1a;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\ncin <span class=\"token operator\">&gt;&gt;<\/span> ch<span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u5b57\u7b26\u578b\u53d8\u91cfch &#061; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> ch <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/4\u3001\u5b57\u7b26\u4e32\u578b<\/span><br \/>\nstring str <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;hello&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u8bf7\u7ed9\u5b57\u7b26\u4e32str\u8d4b\u503c&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\ncin <span class=\"token operator\">&gt;&gt;<\/span> str<span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u5b57\u7b26\u4e32str &#061; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> str <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/5\u3001\u5e03\u5c14\u7c7b\u578b<\/span><br \/>\n<span class=\"token keyword\">bool<\/span> flag <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u8bf7\u7ed9\u5e03\u5c14\u7c7b\u578bflag\u8d4b\u503c&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\ncin <span class=\"token operator\">&gt;&gt;<\/span> flag<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/bool\u7c7b\u578b \u53ea\u8981\u662f\u975e0\u7684\u503c\u90fd\u4ee3\u8868\u771f<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u5e03\u5c14\u7c7b\u578bflag &#061; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> flag <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>3 \u8fd0\u7b97\u7b26<\/h4>\n<p>\u4f5c\u7528&#xff1a;\u7528\u4e8e\u6267\u884c\u4ee3\u7801\u7684\u8fd0\u7b97<\/p>\n<p>\u672c\u7ae0\u6211\u4eec\u4e3b\u8981\u8bb2\u89e3\u4ee5\u4e0b\u51e0\u7c7b\u8fd0\u7b97\u7b26&#xff1a;<\/p>\n<table>\n<tr>\u8fd0\u7b97\u7b26\u7c7b\u578b\u4f5c\u7528<\/tr>\n<tbody>\n<tr>\n<td>\u7b97\u672f\u8fd0\u7b97\u7b26<\/td>\n<td>\u7528\u4e8e\u5904\u7406\u56db\u5219\u8fd0\u7b97<\/td>\n<\/tr>\n<tr>\n<td>\u8d4b\u503c\u8fd0\u7b97\u7b26<\/td>\n<td>\u7528\u4e8e\u5c06\u8868\u8fbe\u5f0f\u7684\u503c\u8d4b\u7ed9\u53d8\u91cf<\/td>\n<\/tr>\n<tr>\n<td>\u6bd4\u8f83\u8fd0\u7b97\u7b26<\/td>\n<td>\u7528\u4e8e\u8868\u8fbe\u5f0f\u7684\u6bd4\u8f83&#xff0c;\u5e76\u8fd4\u56de\u4e00\u4e2a\u771f\u503c\u6216\u5047\u503c<\/td>\n<\/tr>\n<tr>\n<td>\u903b\u8f91\u8fd0\u7b97\u7b26<\/td>\n<td>\u7528\u4e8e\u6839\u636e\u8868\u8fbe\u5f0f\u7684\u503c\u8fd4\u56de\u771f\u503c\u6216\u5047\u503c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h5>3.1 \u7b97\u672f\u8fd0\u7b97\u7b26<\/h5>\n<p>\u4f5c\u7528&#xff1a;\u7528\u4e8e\u5904\u7406\u56db\u5219\u8fd0\u7b97<\/p>\n<p>\u7b97\u672f\u8fd0\u7b97\u7b26\u5305\u62ec\u4ee5\u4e0b\u7b26\u53f7&#xff1a;<\/p>\n<table>\n<tr>\u8fd0\u7b97\u7b26\u672f\u8bed\u793a\u4f8b\u7ed3\u679c<\/tr>\n<tbody>\n<tr>\n<td>&#043;<\/td>\n<td>\u6b63\u53f7<\/td>\n<td>&#043;3<\/td>\n<td>3<\/td>\n<\/tr>\n<tr>\n<td>&#8211;<\/td>\n<td>\u8d1f\u53f7<\/td>\n<td>-3<\/td>\n<td>-3<\/td>\n<\/tr>\n<tr>\n<td>&#043;<\/td>\n<td>\u52a0<\/td>\n<td>10 &#043; 5<\/td>\n<td>15<\/td>\n<\/tr>\n<tr>\n<td>&#8211;<\/td>\n<td>\u51cf<\/td>\n<td>10 &#8211; 5<\/td>\n<td>5<\/td>\n<\/tr>\n<tr>\n<td>*<\/td>\n<td>\u4e58<\/td>\n<td>10 * 5<\/td>\n<td>50<\/td>\n<\/tr>\n<tr>\n<td>\/<\/td>\n<td>\u9664<\/td>\n<td>10 \/ 5<\/td>\n<td>2<\/td>\n<\/tr>\n<tr>\n<td>%<\/td>\n<td>\u53d6\u6a21&#xff08;\u53d6\u4f59&#xff09;<\/td>\n<td>10 % 3<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>&#043;&#043;<\/td>\n<td>\u524d\u7f6e\u9012\u589e<\/td>\n<td>a&#061;2; b&#061;&#043;&#043;a;<\/td>\n<td>a&#061;3; b&#061;3;<\/td>\n<\/tr>\n<tr>\n<td>&#043;&#043;<\/td>\n<td>\u540e\u7f6e\u9012\u589e<\/td>\n<td>a&#061;2; b&#061;a&#043;&#043;;<\/td>\n<td>a&#061;3; b&#061;2;<\/td>\n<\/tr>\n<tr>\n<td>&#8211; &#8211;<\/td>\n<td>\u524d\u7f6e\u9012\u51cf<\/td>\n<td>a&#061;2; b&#061;\u2013a;<\/td>\n<td>a&#061;1; b&#061;1;<\/td>\n<\/tr>\n<tr>\n<td>&#8211; &#8211;<\/td>\n<td>\u540e\u7f6e\u9012\u51cf<\/td>\n<td>a&#061;2; b&#061;a\u2013;<\/td>\n<td>a&#061;1; b&#061;2;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u793a\u4f8b1&#xff1a;<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u52a0\u51cf\u4e58\u9664<\/span><br \/>\n<span class=\"token keyword\">int<\/span> a1 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">int<\/span> b1 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>cout <span class=\"token operator\">&lt;&lt;<\/span> a1 <span class=\"token operator\">&#043;<\/span> b1 <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> a1 <span class=\"token operator\">&#8211;<\/span> b1 <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> a1 <span class=\"token operator\">*<\/span> b1 <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> a1 <span class=\"token operator\">\/<\/span> b1 <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u4e24\u4e2a\u6574\u6570\u76f8\u9664 \u7ed3\u679c\u4f9d\u7136\u662f\u6574\u6570&#xff0c;\u5c06\u5c0f\u6570\u90e8\u5206\u53bb\u9664<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> a2 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">int<\/span> b2 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">20<\/span><span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> a2 <span class=\"token operator\">\/<\/span> b2 <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> a3 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">int<\/span> b3 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/cout &lt;&lt; a3 \/ b3 &lt;&lt; endl; \/\/\u9519\u8bef&#xff1a;\u4e24\u4e2a\u6570\u5b57\u76f8\u9664&#xff0c;\u9664\u6570\u4e0d\u53ef\u4ee5\u4e3a0<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u4e24\u4e2a\u5c0f\u6570\u53ef\u4ee5\u76f8\u9664<\/span><br \/>\n<span class=\"token keyword\">double<\/span> d1 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0.5<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">double<\/span> d2 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0.22<\/span><span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> d1 <span class=\"token operator\">\/<\/span> d2 <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u8fd0\u7b97\u7684\u7ed3\u679c\u4e5f\u53ef\u4ee5\u662f\u5c0f\u6570<\/span><\/p>\n<p><span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u603b\u7ed3&#xff1a;\u5728\u9664\u6cd5\u8fd0\u7b97\u4e2d&#xff0c;\u9664\u6570\u4e0d\u80fd\u4e3a0<\/p>\n<p>\u793a\u4f8b2&#xff1a;<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u53d6\u6a21\u8fd0\u7b97\u672c\u8d28&#xff1a;\u6c42\u4f59\u6570<\/span><br \/>\n<span class=\"token keyword\">int<\/span> a1 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">int<\/span> b1 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>cout <span class=\"token operator\">&lt;&lt;<\/span> a1 <span class=\"token operator\">%<\/span> b1 <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> a2 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">int<\/span> b2 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">20<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>cout <span class=\"token operator\">&lt;&lt;<\/span> a2 <span class=\"token operator\">%<\/span> b2 <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> a3 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">int<\/span> b3 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/\u4e24\u4e2a\u6570\u76f8\u9664\u9664\u6570\u4e0d\u53ef\u4ee5\u4e3a0&#xff0c;\u6240\u4ee5\u4e5f\u505a\u4e0d\u4e86\u53d6\u6a21\u8fd0\u7b97<\/span><br \/>\n<span class=\"token comment\">\/\/cout &lt;&lt; a3 % b3 &lt;&lt; endl;<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u4e24\u4e2a\u5c0f\u6570\u4e0d\u53ef\u4ee5\u505a\u53d6\u6a21\u8fd0\u7b97<\/span><br \/>\n<span class=\"token keyword\">double<\/span> d1 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">3.14<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">double<\/span> d2 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1.1<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/cout &lt;&lt; d1 %  d2 &lt;&lt; endl;<\/span><\/p>\n<p><span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u603b\u7ed3&#xff1a;\u53ea\u6709\u6574\u578b\u53d8\u91cf\u53ef\u4ee5\u8fdb\u884c\u53d6\u6a21\u8fd0\u7b97<\/p>\n<p>\u793a\u4f8b3&#xff1a;<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p><span class=\"token comment\">\/\/1\u3001\u524d\u7f6e\u9012\u589e<\/span><br \/>\n<span class=\"token keyword\">int<\/span> a <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token operator\">&#043;&#043;<\/span>a<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u8ba9\u53d8\u91cf&#043;1<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;a &#061; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> a <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/2\u3001\u540e\u7f6e\u9012\u589e<\/span><br \/>\n<span class=\"token keyword\">int<\/span> b <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\nb<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/\u8ba9\u53d8\u91cf&#043;1<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;b &#061; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> b <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/3\u3001\u524d\u7f6e\u548c\u540e\u7f6e\u7684\u533a\u522b<\/span><br \/>\n<span class=\"token comment\">\/\/\u524d\u7f6e\u9012\u589e&#xff1a;\u5148\u8ba9\u53d8\u91cf&#043;1&#xff0c;\u7136\u540e\u8fdb\u884c\u8868\u8fbe\u5f0f\u8fd0\u7b97<\/span><br \/>\n<span class=\"token keyword\">int<\/span> a2 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">int<\/span> b2 <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&#043;&#043;<\/span>a2 <span class=\"token operator\">*<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;a2 &#061; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> a2 <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;b2 &#061; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> b2 <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u540e\u7f6e\u9012\u589e&#xff1a;\u5148\u8fdb\u6027\u8868\u8fbe\u5f0f\u8fd0\u7b97&#xff0c;\u540e\u8ba9\u53d8\u91cf&#043;1<\/span><br \/>\n<span class=\"token keyword\">int<\/span> a3 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">int<\/span> b3 <span class=\"token operator\">&#061;<\/span> a3<span class=\"token operator\">&#043;&#043;<\/span> <span class=\"token operator\">*<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;a3 &#061; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> a3 <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;b3 &#061; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> b3 <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u603b\u7ed3&#xff1a;\u524d\u7f6e\u9012\u589e\u5148\u5bf9\u53d8\u91cf\u8fdb\u884c&#043;&#043;&#xff0c;\u518d\u8ba1\u7b97\u8868\u8fbe\u5f0f&#xff0c;\u540e\u7f6e\u9012\u589e\u76f8\u53cd<\/p>\n<h5>3.2 \u8d4b\u503c\u8fd0\u7b97\u7b26<\/h5>\n<p>\u4f5c\u7528&#xff1a;\u7528\u4e8e\u5c06\u8868\u8fbe\u5f0f\u7684\u503c\u8d4b\u7ed9\u53d8\u91cf<\/p>\n<p>\u8d4b\u503c\u8fd0\u7b97\u7b26\u5305\u62ec\u4ee5\u4e0b\u51e0\u4e2a\u7b26\u53f7&#xff1a;<\/p>\n<table>\n<tr>\u8fd0\u7b97\u7b26\u672f\u8bed\u793a\u4f8b\u7ed3\u679c<\/tr>\n<tbody>\n<tr>\n<td>&#061;<\/td>\n<td>\u8d4b\u503c<\/td>\n<td>a&#061;2; b&#061;3;<\/td>\n<td>a&#061;2; b&#061;3;<\/td>\n<\/tr>\n<tr>\n<td>&#043;&#061;<\/td>\n<td>\u52a0\u7b49\u4e8e<\/td>\n<td>a&#061;0; a&#043;&#061;2;<\/td>\n<td>a&#061;2;<\/td>\n<\/tr>\n<tr>\n<td>-&#061;<\/td>\n<td>\u51cf\u7b49\u4e8e<\/td>\n<td>a&#061;5; a-&#061;3;<\/td>\n<td>a&#061;2;<\/td>\n<\/tr>\n<tr>\n<td>*&#061;<\/td>\n<td>\u4e58\u7b49\u4e8e<\/td>\n<td>a&#061;2; a*&#061;2;<\/td>\n<td>a&#061;4;<\/td>\n<\/tr>\n<tr>\n<td>\/&#061;<\/td>\n<td>\u9664\u7b49\u4e8e<\/td>\n<td>a&#061;4; a\/&#061;2;<\/td>\n<td>a&#061;2;<\/td>\n<\/tr>\n<tr>\n<td>%&#061;<\/td>\n<td>\u6a21\u7b49\u4e8e<\/td>\n<td>a&#061;3; a%2;<\/td>\n<td>a&#061;1;<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u8d4b\u503c\u8fd0\u7b97\u7b26<\/span><\/p>\n<p><span class=\"token comment\">\/\/ &#061;<\/span><br \/>\n<span class=\"token keyword\">int<\/span> a <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\na <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">100<\/span><span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;a &#061; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> a <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ &#043;&#061;<\/span><br \/>\na <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\na <span class=\"token operator\">&#043;&#061;<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ a &#061; a &#043; 2;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;a &#061; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> a <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ -&#061;<\/span><br \/>\na <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\na <span class=\"token operator\">-&#061;<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ a &#061; a &#8211; 2;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;a &#061; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> a <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ *&#061;<\/span><br \/>\na <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\na <span class=\"token operator\">*&#061;<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ a &#061; a * 2;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;a &#061; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> a <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \/&#061;<\/span><br \/>\na <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\na <span class=\"token operator\">\/&#061;<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ a &#061; a \/ 2;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;a &#061; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> a <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ %&#061;<\/span><br \/>\na <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\na <span class=\"token operator\">%&#061;<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ a &#061; a % 2;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;a &#061; &#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> a <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h5>3.3 \u6bd4\u8f83\u8fd0\u7b97\u7b26<\/h5>\n<p>\u4f5c\u7528&#xff1a;\u7528\u4e8e\u8868\u8fbe\u5f0f\u7684\u6bd4\u8f83&#xff0c;\u5e76\u8fd4\u56de\u4e00\u4e2a\u771f\u503c\u6216\u5047\u503c<\/p>\n<p>\u6bd4\u8f83\u8fd0\u7b97\u7b26\u6709\u4ee5\u4e0b\u7b26\u53f7&#xff1a;<\/p>\n<table>\n<tr>\u8fd0\u7b97\u7b26\u672f\u8bed\u793a\u4f8b\u7ed3\u679c<\/tr>\n<tbody>\n<tr>\n<td>&#061;&#061;<\/td>\n<td>\u76f8\u7b49\u4e8e<\/td>\n<td>4 &#061;&#061; 3<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td>!&#061;<\/td>\n<td>\u4e0d\u7b49\u4e8e<\/td>\n<td>4 !&#061; 3<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>&lt;<\/td>\n<td>\u5c0f\u4e8e<\/td>\n<td>4&lt;3<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td>&gt;<\/td>\n<td>\u5927\u4e8e<\/td>\n<td>4&gt;3<\/td>\n<td>1<\/td>\n<\/tr>\n<tr>\n<td>&lt;&#061;<\/td>\n<td>\u5c0f\u4e8e\u7b49\u4e8e<\/td>\n<td>4 &lt;&#061; 3<\/td>\n<td>0<\/td>\n<\/tr>\n<tr>\n<td>&gt;&#061;<\/td>\n<td>\u5927\u4e8e\u7b49\u4e8e<\/td>\n<td>4 &gt;&#061; 3<\/td>\n<td>1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u6bd4\u8f83\u8fd0\u7b97\u7b26<\/span><\/p>\n<p><span class=\"token comment\">\/\/ &#061;&#061;<\/span><br \/>\n<span class=\"token keyword\">int<\/span> a <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">int<\/span> b <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">20<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token punctuation\">(<\/span>a <span class=\"token operator\">&#061;&#061;<\/span> b<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ !&#061;<\/span><\/p>\n<p>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token punctuation\">(<\/span>a <span class=\"token operator\">!&#061;<\/span> b<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ &gt;<\/span><\/p>\n<p>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token punctuation\">(<\/span>a <span class=\"token operator\">&gt;<\/span> b<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ &lt;<\/span><\/p>\n<p>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token punctuation\">(<\/span>a <span class=\"token operator\">&lt;<\/span> b<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ &gt;&#061;<\/span><\/p>\n<p>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token punctuation\">(<\/span>a <span class=\"token operator\">&gt;&#061;<\/span> b<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ &lt;&#061;<\/span><\/p>\n<p>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token punctuation\">(<\/span>a <span class=\"token operator\">&lt;&#061;<\/span> b<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u6ce8\u610f&#xff1a;C\u548cC&#043;&#043; \u8bed\u8a00\u7684\u6bd4\u8f83\u8fd0\u7b97\u4e2d&#xff0c; \u201c\u771f\u201d\u7528\u6570\u5b57\u201c1\u201d\u6765\u8868\u793a&#xff0c; \u201c\u5047\u201d\u7528\u6570\u5b57\u201c0\u201d\u6765\u8868\u793a\u3002<\/p>\n<h5>3.4 \u903b\u8f91\u8fd0\u7b97\u7b26<\/h5>\n<p>\u4f5c\u7528&#xff1a;\u7528\u4e8e\u6839\u636e\u8868\u8fbe\u5f0f\u7684\u503c\u8fd4\u56de\u771f\u503c\u6216\u5047\u503c<\/p>\n<p>\u903b\u8f91\u8fd0\u7b97\u7b26\u6709\u4ee5\u4e0b\u7b26\u53f7&#xff1a;<\/p>\n<table>\n<tr>\u8fd0\u7b97\u7b26\u672f\u8bed\u793a\u4f8b\u7ed3\u679c<\/tr>\n<tbody>\n<tr>\n<td>!<\/td>\n<td>\u975e<\/td>\n<td>!a<\/td>\n<td>\u5982\u679ca\u4e3a\u5047&#xff0c;\u5219!a\u4e3a\u771f&#xff1b; \u5982\u679ca\u4e3a\u771f&#xff0c;\u5219!a\u4e3a\u5047\u3002<\/td>\n<\/tr>\n<tr>\n<td>&amp;&amp;<\/td>\n<td>\u4e0e<\/td>\n<td>a &amp;&amp; b<\/td>\n<td>\u5982\u679ca\u548cb\u90fd\u4e3a\u771f&#xff0c;\u5219\u7ed3\u679c\u4e3a\u771f&#xff0c;\u5426\u5219\u4e3a\u5047\u3002<\/td>\n<\/tr>\n<tr>\n<td>||<\/td>\n<td>\u6216<\/td>\n<td>a || b<\/td>\n<td>\u5982\u679ca\u548cb\u6709\u4e00\u4e2a\u4e3a\u771f&#xff0c;\u5219\u7ed3\u679c\u4e3a\u771f&#xff0c;\u4e8c\u8005\u90fd\u4e3a\u5047\u65f6&#xff0c;\u7ed3\u679c\u4e3a\u5047\u3002<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u793a\u4f8b1&#xff1a;\u903b\u8f91\u975e<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u903b\u8f91\u8fd0\u7b97\u7b26  \u975e<\/span><br \/>\n<span class=\"token keyword\">int<\/span> a <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/\u5728C&#043;&#043;\u4e2d&#xff0c;\u9664\u4e860&#xff0c;\u90fd\u4e3a\u771f<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token operator\">!<\/span>a <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token operator\">!<\/span><span class=\"token operator\">!<\/span>a <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u603b\u7ed3&#xff1a;\u903b\u8f91\u975e\u8fd0\u7b97\u7b26\u603b\u7ed3&#xff1a; \u771f\u53d8\u5047&#xff0c;\u5047\u53d8\u771f<\/p>\n<p>\u793a\u4f8b2&#xff1a;\u903b\u8f91\u4e0e<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n <span class=\"token comment\">\/\/\u903b\u8f91\u8fd0\u7b97\u7b26 &#8211; \u4e0e  &amp;&amp;<\/span><br \/>\n<span class=\"token keyword\">int<\/span> a <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">int<\/span> b <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token punctuation\">(<\/span> a <span class=\"token operator\">&amp;&amp;<\/span> b <span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p>a <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\nb <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token punctuation\">(<\/span>a <span class=\"token operator\">&amp;&amp;<\/span> b<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p>a <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\nb <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token punctuation\">(<\/span>a <span class=\"token operator\">&amp;&amp;<\/span> b<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u540c\u771f\u4e3a\u771f&#xff0c;\u5176\u4f59\u4e3a\u5047<\/span><\/p>\n<p><span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u603b\u7ed3&#xff1a;\u903b\u8f91\u4e0e\u8fd0\u7b97\u7b26\u603b\u7ed3&#xff1a;\u540c\u771f\u4e3a\u771f&#xff0c;\u5176\u4f59\u4e3a\u5047<\/p>\n<p>\u793a\u4f8b3&#xff1a;\u903b\u8f91\u6216<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> a <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">int<\/span> b <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token punctuation\">(<\/span>a <span class=\"token operator\">||<\/span> b<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p>a <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\nb <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">10<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token punctuation\">(<\/span>a <span class=\"token operator\">||<\/span> b<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p>a <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\nb <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token punctuation\">(<\/span>a <span class=\"token operator\">||<\/span> b<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u903b\u8f91\u6216&#xff1a;\u540c\u5047\u4e3a\u5047&#xff0c;\u5176\u4f59\u4e3a\u771f<\/span><\/p>\n<p><span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u603b\u7ed3&#xff1a;\u903b\u8f91\u6216\u8fd0\u7b97\u7b26\u603b\u7ed3&#xff1a;\u540c\u5047\u4e3a\u5047&#xff0c;\u5176\u4f59\u4e3a\u771f<\/p>\n<h4>4 \u7a0b\u5e8f\u6d41\u7a0b\u7ed3\u6784<\/h4>\n<p>C\/C&#043;&#043;\u652f\u6301\u6700\u57fa\u672c\u7684\u4e09\u79cd\u7a0b\u5e8f\u8fd0\u884c\u7ed3\u6784&#xff1a;\u987a\u5e8f\u7ed3\u6784\u3001\u9009\u62e9\u7ed3\u6784\u3001\u5faa\u73af\u7ed3\u6784<\/p>\n<ul>\n<li>\u987a\u5e8f\u7ed3\u6784&#xff1a;\u7a0b\u5e8f\u6309\u987a\u5e8f\u6267\u884c&#xff0c;\u4e0d\u53d1\u751f\u8df3\u8f6c<\/li>\n<li>\u9009\u62e9\u7ed3\u6784&#xff1a;\u4f9d\u636e\u6761\u4ef6\u662f\u5426\u6ee1\u8db3&#xff0c;\u6709\u9009\u62e9\u7684\u6267\u884c\u76f8\u5e94\u529f\u80fd<\/li>\n<li>\u5faa\u73af\u7ed3\u6784&#xff1a;\u4f9d\u636e\u6761\u4ef6\u662f\u5426\u6ee1\u8db3&#xff0c;\u5faa\u73af\u591a\u6b21\u6267\u884c\u67d0\u6bb5\u4ee3\u7801<\/li>\n<\/ul>\n<h5>4.1 \u9009\u62e9\u7ed3\u6784<\/h5>\n<h6>4.1.1 if\u8bed\u53e5<\/h6>\n<p>\u4f5c\u7528&#xff1a;\u6267\u884c\u6ee1\u8db3\u6761\u4ef6\u7684\u8bed\u53e5<\/p>\n<p>if\u8bed\u53e5\u7684\u4e09\u79cd\u5f62\u5f0f<\/p>\n<ul>\n<li>\u5355\u884c\u683c\u5f0fif\u8bed\u53e5<\/li>\n<li>\u591a\u884c\u683c\u5f0fif\u8bed\u53e5<\/li>\n<li>\u591a\u6761\u4ef6\u7684if\u8bed\u53e5<\/li>\n<\/ul>\n<p>1\u3001\u5355\u884c\u683c\u5f0fif\u8bed\u53e5&#xff1a;if(\u6761\u4ef6){ \u6761\u4ef6\u6ee1\u8db3\u6267\u884c\u7684\u8bed\u53e5 }<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260113135705-69664f31c4e75.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u9009\u62e9\u7ed3\u6784 \u5355\u884cif\u8bed\u53e5<\/span><br \/>\n<span class=\"token comment\">\/\/\u7528\u6237\u8f93\u5165\u5206\u6570&#xff0c;\u5982\u679c\u5206\u6570\u5927\u4e8e600&#xff0c;\u89c6\u4e3a\u8003\u4e0a\u4e00\u672c\u5927\u5b66&#xff0c;\u5728\u5c4f\u5e55\u4e0a\u8f93\u51fa<\/span><\/p>\n<p><span class=\"token comment\">\/\/1\u3001\u7528\u6237\u8f93\u5165\u5206\u6570<\/span><br \/>\n<span class=\"token keyword\">int<\/span> score <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u8bf7\u8f93\u5165\u4e00\u4e2a\u5206\u6570&#xff1a;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\ncin <span class=\"token operator\">&gt;&gt;<\/span> score<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/2\u3001\u6253\u5370\u7528\u6237\u8f93\u5165\u7684\u5206\u6570<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u60a8\u8f93\u5165\u7684\u5206\u6570\u4e3a&#xff1a;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> score <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/3\u3001\u5224\u65ad\u5206\u6570\u662f\u5426\u5927\u4e8e600&#xff0c;\u5982\u679c\u5927\u4e8e&#xff0c;\u90a3\u4e48\u8f93\u51fa<\/span><br \/>\n<span class=\"token comment\">\/\/\u6ce8\u610f\u4e8b\u9879&#xff1a;if\u6761\u4ef6\u540e\u9762\u4e0d\u8981\u52a0\u5206\u53f7<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>score <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">600<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u606d\u559c\u60a8\u8003\u4e0a\u4e86\u4e00\u672c\u5927\u5b66&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u6ce8\u610f&#xff1a;if\u6761\u4ef6\u8868\u8fbe\u5f0f\u540e\u4e0d\u8981\u52a0\u5206\u53f7<\/p>\n<p>2\u3001\u591a\u884c\u683c\u5f0fif\u8bed\u53e5&#xff1a;if(\u6761\u4ef6){ \u6761\u4ef6\u6ee1\u8db3\u6267\u884c\u7684\u8bed\u53e5 }else{ \u6761\u4ef6\u4e0d\u6ee1\u8db3\u6267\u884c\u7684\u8bed\u53e5 }; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260113135705-69664f31cf6fa.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u9009\u62e9\u7ed3\u6784 &#8211; \u591a\u884cif\u8bed\u53e5<\/span><br \/>\n<span class=\"token comment\">\/\/\u8f93\u5165\u8003\u8bd5\u5206\u6570&#xff0c;\u5982\u679c\u5206\u6570\u5927\u4e8e600&#xff0c;\u89c6\u4e3a\u8003\u4e0a\u4e00\u672c\u5927\u5b66&#xff0c;\u5728\u5c4f\u5e55\u4e0a\u8f93\u51fa<\/span><br \/>\n<span class=\"token comment\">\/\/\u5982\u679c\u6ca1\u8003\u4e0a\u4e00\u672c\u5927\u5b66&#xff0c;\u6253\u5370\u672a\u8003\u4e0a\u4e00\u672c\u5927\u5b66<\/span><\/p>\n<p><span class=\"token comment\">\/\/1\u3001\u8f93\u5165\u8003\u8bd5\u5206\u6570<\/span><br \/>\n<span class=\"token keyword\">int<\/span> score <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u8bf7\u8f93\u5165\u4e00\u4e2a\u5206\u6570&#xff1a;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\ncin <span class=\"token operator\">&gt;&gt;<\/span> score<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/2\u3001\u63d0\u793a\u7528\u6237\u8f93\u5165\u7684\u5206\u6570<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u60a8\u8f93\u5165\u7684\u5206\u6570\u4e3a&#xff1a;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> score <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/3\u3001\u5224\u65ad \u5982\u679c\u5927\u4e8e600&#xff0c;\u6253\u5370\u8003\u4e0a\u4e00\u672c&#xff0c;\u5426\u5219\u6253\u5370\u672a\u8003\u4e0a\u4e00\u672c<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>score <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">600<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/\u5927\u4e8e600\u5206\u6267\u884c\u4e0b\u9762\u5927\u62ec\u53f7\u4e2d\u7684\u5185\u5bb9<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u606d\u559c \u8003\u4e0a\u4e00\u672c\u5927\u5b66&#xff01;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">else<\/span> <span class=\"token comment\">\/\/\u4e0d\u5927\u4e8e600\u5206&#xff0c;\u6267\u884celse\u540e\u5927\u62ec\u53f7\u4e2d\u7684\u5185\u5bb9<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u672a\u8003\u4e0a\u4e00\u672c\u5927\u5b66&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>3\u3001\u591a\u6761\u4ef6\u7684if\u8bed\u53e5&#xff1a;if(\u6761\u4ef61){ \u6761\u4ef61\u6ee1\u8db3\u6267\u884c\u7684\u8bed\u53e5 }else if(\u6761\u4ef62){\u6761\u4ef62\u6ee1\u8db3\u6267\u884c\u7684\u8bed\u53e5}\u2026 else{ \u90fd\u4e0d\u6ee1\u8db3\u6267\u884c\u7684\u8bed\u53e5}<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260113135705-69664f31d8c2f.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u9009\u62e9\u7ed3\u6784 \u591a\u6761\u4ef6if\u8bed\u53e5<\/span><br \/>\n<span class=\"token comment\">\/\/\u8f93\u5165\u4e00\u4e2a\u8003\u8bd5\u5206\u6570&#xff0c;\u5982\u679c\u5927\u4e8e600\u5206&#xff0c;\u89c6\u4e3a\u8003\u4e0a\u4e00\u672c\u5927\u5b66&#xff0c;\u5728\u5c4f\u5e55\u8f93\u51fa<\/span><br \/>\n<span class=\"token comment\">\/\/\u5927\u4e8e500&#xff0c;\u89c6\u4e3a\u8003\u4e0a\u4e8c\u672c\u5927\u5b66&#xff0c;\u5728\u5c4f\u5e55\u8f93\u51fa<\/span><br \/>\n<span class=\"token comment\">\/\/\u5927\u4e8e400&#xff0c;\u89c6\u4e3a\u8003\u4e0a\u4e09\u672c\u5927\u5b66&#xff0c;\u5728\u5c4f\u5e55\u8f93\u51fa<\/span><br \/>\n<span class=\"token comment\">\/\/\u5c0f\u4e8e\u7b49\u4e8e400\u5206&#xff0c;\u89c6\u4e3a\u672a\u8003\u4e0a\u672c\u79d1&#xff0c;\u5728\u5c4f\u5e55\u8f93\u51fa<\/span><\/p>\n<p><span class=\"token comment\">\/\/1\u3001\u7528\u6237\u8f93\u5165\u5206\u6570<\/span><br \/>\n<span class=\"token keyword\">int<\/span> score <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u8bf7\u8f93\u5165\u8003\u8bd5\u5206\u6570&#xff1a;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\ncin <span class=\"token operator\">&gt;&gt;<\/span> score<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/2\u3001\u63d0\u793a\u7528\u6237\u8f93\u5165\u7684\u5206\u6570<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u60a8\u8f93\u5165\u7684\u8003\u8bd5\u5206\u6570\u4e3a&#xff1a;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> score <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/3\u3001\u5224\u65ad<\/span><br \/>\n<span class=\"token comment\">\/\/\u5982\u679c\u5927\u4e8e600&#xff0c;\u8003\u4e0a\u4e00\u672c<\/span><br \/>\n<span class=\"token comment\">\/\/\u5982\u679c\u5927\u4e8e500&#xff0c;\u8003\u4e0a\u4e8c\u672c<\/span><br \/>\n<span class=\"token comment\">\/\/\u5982\u679c\u5927\u4e8e400&#xff0c;\u8003\u4e0a\u4e09\u672c<\/span><br \/>\n<span class=\"token comment\">\/\/\u524d\u4e09\u4e2a\u90fd\u6ca1\u6709\u6ee1\u8db3&#xff0c;\u672a\u8003\u4e0a\u672c\u79d1<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>score <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">600<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u606d\u559c\u60a8\u8003\u4e0a\u4e86\u4e00\u672c\u5927\u5b66&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>score <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">500<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/\u7b2c\u4e8c\u4e2a\u6761\u4ef6\u5224\u65ad<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u606d\u559c\u60a8\u8003\u4e0a\u4e86\u4e8c\u672c\u5927\u5b66&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>score <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">400<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u606d\u559c\u60a8\u8003\u4e0a\u4e86\u4e09\u672c\u5927\u5b66&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">else<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u672a\u8003\u4e0a\u672c\u79d1\u5927\u5b66&#xff0c;\u8bf7\u518d\u63a5\u518d\u5389&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u5d4c\u5957if\u8bed\u53e5&#xff1a;\u5728if\u8bed\u53e5\u4e2d&#xff0c;\u53ef\u4ee5\u5d4c\u5957\u4f7f\u7528if\u8bed\u53e5&#xff0c;\u8fbe\u5230\u66f4\u7cbe\u786e\u7684\u6761\u4ef6\u5224\u65ad \u6848\u4f8b\u9700\u6c42&#xff1a;<\/p>\n<ul>\n<li>\u63d0\u793a\u7528\u6237\u8f93\u5165\u4e00\u4e2a\u9ad8\u8003\u8003\u8bd5\u5206\u6570&#xff0c;\u6839\u636e\u5206\u6570\u505a\u5982\u4e0b\u5224\u65ad<\/li>\n<li>\u5206\u6570\u5982\u679c\u5927\u4e8e600\u5206\u89c6\u4e3a\u8003\u4e0a\u4e00\u672c&#xff0c;\u5927\u4e8e500\u5206\u8003\u4e0a\u4e8c\u672c&#xff0c;\u5927\u4e8e400\u8003\u4e0a\u4e09\u672c&#xff0c;\u5176\u4f59\u89c6\u4e3a\u672a\u8003\u4e0a\u672c\u79d1&#xff1b;<\/li>\n<li>\u5728\u4e00\u672c\u5206\u6570\u4e2d&#xff0c;\u5982\u679c\u5927\u4e8e700\u5206&#xff0c;\u8003\u5165\u5317\u5927&#xff0c;\u5927\u4e8e650\u5206&#xff0c;\u8003\u5165\u6e05\u534e&#xff0c;\u5927\u4e8e600\u8003\u5165\u4eba\u5927\u3002<\/li>\n<\/ul>\n<p>\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p><span class=\"token comment\">\/*<br \/>\n-\u63d0\u793a\u7528\u6237\u8f93\u5165\u4e00\u4e2a\u9ad8\u8003\u8003\u8bd5\u5206\u6570&#xff0c;\u6839\u636e\u5206\u6570\u505a\u5982\u4e0b\u5224\u65ad<br \/>\n-\u5206\u6570\u5982\u679c\u5927\u4e8e600\u5206\u89c6\u4e3a\u8003\u4e0a\u4e00\u672c&#xff0c;\u5927\u4e8e500\u5206\u8003\u4e0a\u4e8c\u672c&#xff0c;\u5927\u4e8e400\u8003\u4e0a\u4e09\u672c&#xff0c;\u5176\u4f59\u89c6\u4e3a\u672a\u8003\u4e0a\u672c\u79d1&#xff1b;<br \/>\n-\u5728\u4e00\u672c\u5206\u6570\u4e2d&#xff0c;\u5982\u679c\u5927\u4e8e700\u5206&#xff0c;\u8003\u5165\u5317\u5927&#xff0c;\u5927\u4e8e650\u5206&#xff0c;\u8003\u5165\u6e05\u534e&#xff0c;\u5927\u4e8e600\u8003\u5165\u4eba\u5927\u3002<br \/>\n*\/<\/span><\/p>\n<p><span class=\"token comment\">\/\/1\u3001\u63d0\u793a\u8f93\u5165\u9ad8\u8003\u5206\u6570<\/span><br \/>\n<span class=\"token keyword\">int<\/span> score <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u8bf7\u8f93\u5165\u9ad8\u8003\u8003\u8bd5\u5206\u6570&#xff1a;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\ncin <span class=\"token operator\">&gt;&gt;<\/span> score<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/2\u3001\u663e\u793a\u9ad8\u8003\u5206\u6570<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u60a8\u8f93\u5165\u7684\u8003\u8bd5\u5206\u6570\u4e3a&#xff1a;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> score <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/3\u3001\u5224\u65ad<\/span><br \/>\n<span class=\"token comment\">\/\/\u5982\u679c\u5927\u4e8e600  \u4e00\u672c<\/span><br \/>\n<span class=\"token comment\">\/\/\u5927\u4e8e700  \u5317\u5927<\/span><br \/>\n<span class=\"token comment\">\/\/\u5927\u4e8e650  \u6e05\u534e<\/span><br \/>\n    <span class=\"token comment\">\/\/\u5176\u4f59     \u4eba\u5927<\/span><br \/>\n<span class=\"token comment\">\/\/\u5982\u679c\u5927\u4e8e500  \u4e8c\u672c<\/span><br \/>\n<span class=\"token comment\">\/\/\u5982\u679c\u5927\u4e8e400  \u4e09\u672c<\/span><br \/>\n<span class=\"token comment\">\/\/\u5176\u4f59\u60c5\u51b5&#xff0c;\u672a\u8003\u4e0a\u672c\u79d1<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>score <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">600<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u606d\u559c\u60a8\u8003\u5165\u4e00\u672c\u5927\u5b66&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>score <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">700<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u60a8\u80fd\u8003\u5165\u5317\u4eac\u5927\u5b66&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>score <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">650<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u60a8\u80fd\u8003\u5165\u6e05\u534e\u5927\u5b66&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">else<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u60a8\u80fd\u8003\u5165\u4e2d\u56fd\u4eba\u6c11\u5927\u5b66&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>score <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">500<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/\u7b2c\u4e8c\u4e2a\u6761\u4ef6\u5224\u65ad<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u606d\u559c\u60a8\u8003\u5165\u4e8c\u672c\u5927\u5b66&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">else<\/span> <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>score <span class=\"token operator\">&gt;<\/span> <span class=\"token number\">400<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u606d\u559c\u60a8\u8003\u5165\u4e09\u672c\u5927\u5b66&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">else<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u672a\u8003\u4e0a\u672c\u79d1&#xff0c;\u8bf7\u518d\u63a5\u518d\u5389&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u9009\u62e9\u7ed3\u6784\u6848\u4f8b-\u4e09\u53ea\u5c0f\u732a\u79f0\u4f53\u91cd<\/p>\n<p>\u793a\u4f8b&#xff1a;<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u4e09\u53ea\u5c0f\u732a\u79f0\u4f53\u91cd&#xff0c;\u5224\u65ad\u54ea\u53ea\u6700\u91cd<\/span><\/p>\n<p><span class=\"token comment\">\/\/\u521b\u5efa\u4e09\u53ea\u5c0f\u732a\u7684\u4f53\u91cd\u53d8\u91cf<\/span><br \/>\n<span class=\"token keyword\">int<\/span> num1 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">int<\/span> num2 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">int<\/span> num3 <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/2\u3001\u8ba9\u7528\u6237\u8f93\u5165\u4e09\u53ea\u5c0f\u732a\u7684\u91cd\u91cf<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u8bf7\u8f93\u5165\u5c0f\u732aA\u7684\u4f53\u91cd&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\ncin <span class=\"token operator\">&gt;&gt;<\/span> num1<span class=\"token punctuation\">;<\/span><\/p>\n<p>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u8bf7\u8f93\u5165\u5c0f\u732aB\u7684\u4f53\u91cd&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\ncin <span class=\"token operator\">&gt;&gt;<\/span> num2<span class=\"token punctuation\">;<\/span><\/p>\n<p>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u8bf7\u8f93\u5165\u5c0f\u732aC\u7684\u4f53\u91cd&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\ncin <span class=\"token operator\">&gt;&gt;<\/span> num3<span class=\"token punctuation\">;<\/span><\/p>\n<p>cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u5c0f\u732aA\u7684\u4f53\u91cd\u4e3a&#xff1a;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> num1 <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u5c0f\u732aB\u7684\u4f53\u91cd\u4e3a&#xff1a;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> num2 <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u5c0f\u732aC\u7684\u4f53\u91cd\u4e3a&#xff1a;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> num3 <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/3\u3001\u5224\u65ad\u54ea\u53ea\u6700\u91cd<\/span><br \/>\n<span class=\"token comment\">\/\/\u5148\u5224\u65adA\u548cB\u91cd\u91cf<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>num1 <span class=\"token operator\">&gt;<\/span> num2<span class=\"token punctuation\">)<\/span>  <span class=\"token comment\">\/\/A\u6bd4B\u91cd<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>num1 <span class=\"token operator\">&gt;<\/span> num3<span class=\"token punctuation\">)<\/span>  <span class=\"token comment\">\/\/A\u6bd4C\u91cd<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u5c0f\u732aA\u6700\u91cd&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">else<\/span>  <span class=\"token comment\">\/\/C\u6bd4A\u91cd<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u5c0f\u732aC\u6700\u91cd&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">else<\/span>  <span class=\"token comment\">\/\/B\u6bd4A\u91cd<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>num2 <span class=\"token operator\">&gt;<\/span> num3<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u5c0f\u732aB\u6700\u91cd&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">else<\/span>  <span class=\"token comment\">\/\/C\u6bd4B\u91cd<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\ncout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u5c0f\u732aC\u6700\u91cd&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token function\">system<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;pause&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9ed1\u9a6c\u7a0b\u5e8f\u5458 | C\u7f16\u7a0b&#xff08;\u4e00&#xff09; | \u5b66\u4e60\u7b14\u8bb0\u524d\u8a00C\u57fa\u7840\u5165\u95e81 C\u521d\u8bc61.1\u7b2c\u4e00\u4e2aC\u7a0b\u5e8f1.1.1\u521b\u5efa\u9879\u76ee1.1.2 \u521b\u5efa\u6587\u4ef61.1.3 \u7f16\u5199\u4ee3\u78011.1.4 \u8fd0\u884c\u7a0b\u5e8f1.2 \u6ce8\u91ca1.3 \u53d8\u91cf1.4 \u5e38\u91cf1.5 \u5173\u952e\u5b571.6 \u6807\u8bc6\u7b26\u547d\u540d\u89c4\u52192 \u6570\u636e\u7c7b\u578b2.1 \u6574\u578b2.2 sizeof\u5173\u952e\u5b572.3 \u5b9e\u578b&#xff08;\u6d6e\u70b9\u578b&#xff09;2.4 \u5b57\u7b26\u578b2.5 \u8f6c\u4e49\u5b57\u7b262.6 \u5b57\u7b26\u4e32\u578b2.7 \u5e03\u5c14\u7c7b\u578b2.8 \u6570\u636e\u7684\u8f93\u51653 \u8fd0\u7b97\u7b263.1 \u7b97\u672f\u8fd0\u7b97\u7b263.2 \u8d4b<\/p>\n","protected":false},"author":2,"featured_media":59442,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[55,305],"topic":[],"class_list":["post-59450","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-c","tag-305"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u9ed1\u9a6c\u7a0b\u5e8f\u5458 | C++\u7f16\u7a0b\uff08\u4e00\uff09 | \u5b66\u4e60\u7b14\u8bb0 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/59450.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u9ed1\u9a6c\u7a0b\u5e8f\u5458 | C++\u7f16\u7a0b\uff08\u4e00\uff09 | \u5b66\u4e60\u7b14\u8bb0 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u9ed1\u9a6c\u7a0b\u5e8f\u5458 | C\u7f16\u7a0b&#xff08;\u4e00&#xff09; | \u5b66\u4e60\u7b14\u8bb0\u524d\u8a00C\u57fa\u7840\u5165\u95e81 C\u521d\u8bc61.1\u7b2c\u4e00\u4e2aC\u7a0b\u5e8f1.1.1\u521b\u5efa\u9879\u76ee1.1.2 \u521b\u5efa\u6587\u4ef61.1.3 \u7f16\u5199\u4ee3\u78011.1.4 \u8fd0\u884c\u7a0b\u5e8f1.2 \u6ce8\u91ca1.3 \u53d8\u91cf1.4 \u5e38\u91cf1.5 \u5173\u952e\u5b571.6 \u6807\u8bc6\u7b26\u547d\u540d\u89c4\u52192 \u6570\u636e\u7c7b\u578b2.1 \u6574\u578b2.2 sizeof\u5173\u952e\u5b572.3 \u5b9e\u578b&#xff08;\u6d6e\u70b9\u578b&#xff09;2.4 \u5b57\u7b26\u578b2.5 \u8f6c\u4e49\u5b57\u7b262.6 \u5b57\u7b26\u4e32\u578b2.7 \u5e03\u5c14\u7c7b\u578b2.8 \u6570\u636e\u7684\u8f93\u51653 \u8fd0\u7b97\u7b263.1 \u7b97\u672f\u8fd0\u7b97\u7b263.2 \u8d4b\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/59450.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-01-13T13:57:06+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260113135702-69664f2e6f6e7.png\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"13 \u5206\" \/>\n<script 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