{"id":76012,"date":"2026-02-13T18:50:30","date_gmt":"2026-02-13T10:50:30","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/76012.html"},"modified":"2026-02-13T18:50:30","modified_gmt":"2026-02-13T10:50:30","slug":"c%e8%af%ad%e8%a8%80%e4%bb%8e%e5%85%a5%e9%97%a8%e5%88%b0%e8%bf%9b%e9%98%b6-%e7%ac%ac6%e8%ae%b2%ef%bc%9a%e5%87%bd%e6%95%b0","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/76012.html","title":{"rendered":"C\u8bed\u8a00\u4ece\u5165\u95e8\u5230\u8fdb\u9636\u2014\u2014\u7b2c6\u8bb2\uff1a\u51fd\u6570"},"content":{"rendered":"<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>\n<ul>\n<li>1. \u51fd\u6570\u7684\u6982\u5ff5<\/li>\n<li>2. \u5e93\u51fd\u6570<\/li>\n<li>\n<ul>\n<li>2.1 \u6807\u51c6\u5e93\u3001\u5e93\u51fd\u6570\u3001\u5934\u6587\u4ef6<\/li>\n<li>2.2 \u5e93\u51fd\u6570\u7684\u4f7f\u7528\u65b9\u6cd5<\/li>\n<li>\n<ul>\n<li>2.2.1 \u51fd\u6570\u539f\u578b<\/li>\n<li>2.2.2 \u529f\u80fd<\/li>\n<li>2.2.3 \u5934\u6587\u4ef6\u5305\u542b<\/li>\n<li>2.2.4 \u5b9e\u8df5<\/li>\n<li>2.2.5 \u5e93\u51fd\u6570\u6587\u6863\u7684\u4e00\u822c\u683c\u5f0f<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>3. \u81ea\u5b9a\u4e49\u51fd\u6570<\/li>\n<li>\n<ul>\n<li>3.1 \u51fd\u6570\u7684\u8bed\u6cd5\u5f62\u5f0f<\/li>\n<li>3.2 \u51fd\u6570\u7684\u4e3e\u4f8b<\/li>\n<\/ul>\n<\/li>\n<li>4. \u5f62\u53c2\u548c\u5b9e\u53c2<\/li>\n<li>\n<ul>\n<li>4.1 \u5b9e\u53c2<\/li>\n<li>4.2 \u5f62\u53c2<\/li>\n<li>4.3 \u5b9e\u53c2\u548c\u5f62\u53c2\u7684\u5173\u7cfb<\/li>\n<\/ul>\n<\/li>\n<li>5. return\u8bed\u53e5<\/li>\n<li>6. \u6570\u7ec4\u505a\u51fd\u6570\u53c2\u6570<\/li>\n<li>7. \u5d4c\u5957\u8c03\u7528\u548c\u94fe\u5f0f\u8bbf\u95ee<\/li>\n<li>\n<ul>\n<li>7.1 \u5d4c\u5957\u8c03\u7528<\/li>\n<li>7.2 \u94fe\u5f0f\u8bbf\u95ee<\/li>\n<\/ul>\n<\/li>\n<li>8. \u51fd\u6570\u7684\u58f0\u660e\u548c\u5b9a\u4e49<\/li>\n<li>\n<ul>\n<li>8.1 \u5355\u4e2a\u6587\u4ef6<\/li>\n<li>8.2 \u591a\u4e2a\u6587\u4ef6<\/li>\n<li>8.3 static \u548c extern<\/li>\n<li>\n<ul>\n<li>8.3.1 \u4f5c\u7528\u57df\u548c\u751f\u547d\u5468\u671f<\/li>\n<li>8.3.2 static \u548c extern \u7684\u7528\u9014<\/li>\n<li>8.3.3 static \u4fee\u9970\u5c40\u90e8\u53d8\u91cf<\/li>\n<li>8.3.4 static \u4fee\u9970\u5168\u5c40\u53d8\u91cf<\/li>\n<li>8.3.5 static \u4fee\u9970\u51fd\u6570<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h3>1. \u51fd\u6570\u7684\u6982\u5ff5<\/h3>\n<p>\u6570\u5b66\u4e2d\u6211\u4eec\u89c1\u8fc7\u51fd\u6570&#xff08;\u5982\u4e00\u6b21\u51fd\u6570 y&#061;kx&#043;b&#xff09;&#xff0c;\u7ed9\u4efb\u610f x \u53ef\u5f97\u5230\u5bf9\u5e94 y \u503c\u3002<\/p>\n<p>C\u8bed\u8a00\u4e2d\u7684\u51fd\u6570&#xff08;\u53c8\u79f0\u5b50\u7a0b\u5e8f&#xff09;&#xff0c;\u662f\u5b8c\u6210\u67d0\u9879\u7279\u5b9a\u4efb\u52a1\u7684\u5c0f\u6bb5\u4ee3\u7801&#xff0c;\u6709\u7279\u6b8a\u5199\u6cd5\u548c\u8c03\u7528\u89c4\u5219\u3002 C\u8bed\u8a00\u7a0b\u5e8f\u7531\u65e0\u6570\u4e2a\u51fd\u6570\u7ec4\u5408\u800c\u6210&#xff0c;\u5373\u4e00\u4e2a\u5927\u7684\u8ba1\u7b97\u4efb\u52a1\u53ef\u5206\u89e3\u4e3a\u82e5\u5e72\u4e2a\u5c0f\u51fd\u6570\u5b8c\u6210&#xff0c;\u51fd\u6570\u7684\u590d\u7528\u6027\u80fd\u63d0\u5347\u4e86\u8f6f\u4ef6\u7684\u5f00\u53d1\u6548\u7387\u3002<\/p>\n<p>C\u8bed\u8a00\u4e2d\u51fd\u6570\u4e3b\u8981\u5206\u4e3a\u4e24\u7c7b&#xff1a;<\/p>\n<ul>\n<li>\u5e93\u51fd\u6570<\/li>\n<li>\u81ea\u5b9a\u4e49\u51fd\u6570<\/li>\n<\/ul>\n<h3>2. \u5e93\u51fd\u6570<\/h3>\n<h4>2.1 \u6807\u51c6\u5e93\u3001\u5e93\u51fd\u6570\u3001\u5934\u6587\u4ef6<\/h4>\n<p>C\u8bed\u8a00\u6807\u51c6\u4ec5\u89c4\u5b9a\u8bed\u6cd5\u89c4\u5219&#xff0c;\u4e0d\u63d0\u4f9b\u5e93\u51fd\u6570\u3002<\/p>\n<p>\u56fd\u9645\u6807\u51c6ANSI C\u5b9a\u4e49\u4e86\u5e38\u7528\u51fd\u6570\u6807\u51c6&#xff0c;\u5373\u6807\u51c6\u5e93\u3002<\/p>\n<p>\u7f16\u8bd1\u5668\u5382\u5546\u6839\u636e\u6807\u51c6\u5e93\u5b9e\u73b0\u7684\u51fd\u6570\u79f0\u4e3a\u5e93\u51fd\u6570\u3002\u6211\u4eec\u4e4b\u524d\u5b66\u4e60\u7684printf\u3001scanf\u5747\u4e3a\u5e93\u51fd\u6570&#xff0c;\u5e93\u51fd\u6570\u65e0\u9700\u7a0b\u5e8f\u5458\u81ea\u884c\u5b9e\u73b0&#xff0c;\u76f4\u63a5\u5b66\u4e60\u4f7f\u7528\u5373\u53ef&#xff0c;\u5176\u8d28\u91cf\u548c\u6267\u884c\u6548\u7387\u66f4\u6709\u4fdd\u969c\u3002<\/p>\n<p>\u5e93\u51fd\u6570\u6309\u529f\u80fd\u5212\u5206&#xff0c;\u58f0\u660e\u5728\u4e0d\u540c\u5934\u6587\u4ef6\u4e2d\u3002<\/p>\n<p>\u5e93\u51fd\u6570\u76f8\u5173\u5934\u6587\u4ef6\u53c2\u8003&#xff1a;https:\/\/zh.cppreference.com\/w\/c\/header&#xff0c;\u6db5\u76d6\u6570\u5b66\u3001\u5b57\u7b26\u4e32\u3001\u65e5\u671f\u7b49\u5404\u7c7b\u529f\u80fd&#xff0c;\u65e0\u9700\u4e00\u6b21\u6027\u5168\u90e8\u638c\u63e1&#xff0c;\u53ef\u9010\u6b65\u5b66\u4e60\u3002<\/p>\n<h4>2.2 \u5e93\u51fd\u6570\u7684\u4f7f\u7528\u65b9\u6cd5<\/h4>\n<p>\u5e93\u51fd\u6570\u7684\u5b66\u4e60\u548c\u67e5\u770b\u5de5\u5177\u4e30\u5bcc&#xff0c;\u5e38\u7528\u7684\u6709&#xff1a;<\/p>\n<ul>\n<li>C\/C&#043;&#043;\u5b98\u65b9\u94fe\u63a5&#xff1a;https:\/\/zh.cppreference.com\/w\/c\/header<\/li>\n<li>\u4e2d\u6587\u7248&#xff1a;https:\/\/cppreference.cn\/w\/<\/li>\n<li>cplusplus.com&#xff1a;https:\/\/legacy.cplusplus.com\/reference\/clibrary\/<\/li>\n<\/ul>\n<p>\u4ee5sqrt\u51fd\u6570\u4e3a\u4f8b&#xff0c;\u8be6\u7ec6\u8bf4\u660e\u5e93\u51fd\u6570\u7684\u4f7f\u7528&#xff1a;<\/p>\n<h5>2.2.1 \u51fd\u6570\u539f\u578b<\/h5>\n<p><span class=\"token keyword\">double<\/span> <span class=\"token function\">sqrt<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">double<\/span> x<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<ul>\n<li>sqrt&#xff1a;\u51fd\u6570\u540d<\/li>\n<li>x&#xff1a;\u51fd\u6570\u53c2\u6570&#xff0c;\u9700\u4f20\u9012\u4e00\u4e2adouble\u7c7b\u578b\u7684\u503c<\/li>\n<li>double&#xff1a;\u8fd4\u56de\u503c\u7c7b\u578b&#xff0c;\u51fd\u6570\u8ba1\u7b97\u7ed3\u679c\u4e3adouble\u7c7b\u578b<\/li>\n<\/ul>\n<h5>2.2.2 \u529f\u80fd<\/h5>\n<p>\u8ba1\u7b97\u5e73\u65b9\u6839&#xff0c;\u8fd4\u56de\u53c2\u6570x\u7684\u5e73\u65b9\u6839\u3002<\/p>\n<h5>2.2.3 \u5934\u6587\u4ef6\u5305\u542b<\/h5>\n<p>\u5e93\u51fd\u6570\u9700\u5305\u542b\u5bf9\u5e94\u5934\u6587\u4ef6\u624d\u80fd\u4f7f\u7528&#xff0c;sqrt\u51fd\u6570\u7684\u5934\u6587\u4ef6\u4e3a&lt;math.h&gt;\u3002<\/p>\n<h5>2.2.4 \u5b9e\u8df5<\/h5>\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;stdio.h&gt;<\/span><\/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;math.h&gt;<\/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><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">double<\/span> d <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">16.0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">double<\/span> r <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">sqrt<\/span><span class=\"token punctuation\">(<\/span>d<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%lf\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span> r<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <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>\u8fd0\u884c\u7ed3\u679c&#xff1a;<\/p>\n<p>4.000000<\/p>\n<h5>2.2.5 \u5e93\u51fd\u6570\u6587\u6863\u7684\u4e00\u822c\u683c\u5f0f<\/h5>\n<li>\u51fd\u6570\u539f\u578b<\/li>\n<li>\u51fd\u6570\u529f\u80fd\u4ecb\u7ecd<\/li>\n<li>\u53c2\u6570\u548c\u8fd4\u56de\u7c7b\u578b\u8bf4\u660e<\/li>\n<li>\u4ee3\u7801\u4e3e\u4f8b<\/li>\n<li>\u4ee3\u7801\u8f93\u51fa<\/li>\n<li>\u76f8\u5173\u77e5\u8bc6\u94fe\u63a5<\/li>\n<h3>3. \u81ea\u5b9a\u4e49\u51fd\u6570<\/h3>\n<p>\u81ea\u5b9a\u4e49\u51fd\u6570\u80fd\u7ed9\u7a0b\u5e8f\u5458\u66f4\u591a\u521b\u9020\u6027&#xff0c;\u662f\u7f16\u7a0b\u4e2d\u66f4\u4e3a\u91cd\u8981\u7684\u90e8\u5206\u3002<\/p>\n<h4>3.1 \u51fd\u6570\u7684\u8bed\u6cd5\u5f62\u5f0f<\/h4>\n<p>\u81ea\u5b9a\u4e49\u51fd\u6570\u4e0e\u5e93\u51fd\u6570\u5f62\u5f0f\u4e00\u81f4&#xff0c;\u8bed\u6cd5\u5982\u4e0b&#xff1a;<\/p>\n<p>ret_type <span class=\"token function\">fun_name<\/span><span class=\"token punctuation\">(<\/span>\u5f62\u5f0f\u53c2\u6570<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u51fd\u6570\u4f53<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<ul>\n<li>ret_type&#xff1a;\u51fd\u6570\u8fd4\u56de\u7c7b\u578b&#xff0c;\u82e5\u65e0\u9700\u8fd4\u56de\u503c\u5219\u4e3avoid<\/li>\n<li>fun_name&#xff1a;\u51fd\u6570\u540d&#xff0c;\u9700\u6839\u636e\u529f\u80fd\u8d77\u6709\u610f\u4e49\u7684\u540d\u79f0<\/li>\n<li>\u5f62\u5f0f\u53c2\u6570&#xff1a;\u53ef\u4ee5\u65e0\u53c2\u6570&#xff08;void&#xff09;&#xff0c;\u6709\u53c2\u6570\u9700\u8bf4\u660e\u53c2\u6570\u4e2a\u6570\u3001\u6bcf\u4e2a\u53c2\u6570\u7684\u7c7b\u578b\u3001\u5f62\u53c2\u7684\u540d\u5b57<\/li>\n<li>\u51fd\u6570\u4f53&#xff1a;\u7528{}\u62ec\u8d77&#xff0c;\u662f\u5b9e\u73b0\u51fd\u6570\u529f\u80fd\u7684\u6838\u5fc3\u4ee3\u7801<\/li>\n<\/ul>\n<p>\u53ef\u5c06\u51fd\u6570\u7c7b\u6bd4\u4e3a\u5c0f\u578b\u52a0\u5de5\u5382&#xff1a;\u8f93\u5165\u539f\u6750\u6599&#xff08;\u5f62\u5f0f\u53c2\u6570&#xff09;&#xff0c;\u7ecf\u52a0\u5de5&#xff08;\u51fd\u6570\u4f53\u4ee3\u7801&#xff09;&#xff0c;\u4ea7\u51fa\u4ea7\u54c1&#xff08;\u8fd4\u56de\u503c&#xff09;\u3002 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260213105026-698f01f216017.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" width=\"300\" \/><\/p>\n<h4>3.2 \u51fd\u6570\u7684\u4e3e\u4f8b<\/h4>\n<p>\u9700\u6c42&#xff1a;\u5199\u4e00\u4e2a\u52a0\u6cd5\u51fd\u6570&#xff0c;\u5b8c\u62102\u4e2a\u6574\u578b\u53d8\u91cf\u7684\u52a0\u6cd5\u64cd\u4f5c\u3002<\/p>\n<p>\u5b8c\u6574\u4ee3\u7801<\/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;stdio.h&gt;<\/span><\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u52a0\u6cd5\u51fd\u6570\u5b9a\u4e49<\/span><br \/>\n<span class=\"token keyword\">int<\/span> <span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> x<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> y<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> z <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    z <span class=\"token operator\">&#061;<\/span> x <span class=\"token operator\">&#043;<\/span> y<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> z<span class=\"token punctuation\">;<\/span><br \/>\n<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 \/>\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 \/>\n    <span class=\"token keyword\">int<\/span> b <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u8f93\u5165\u4e24\u4e2a\u6574\u6570<\/span><br \/>\n    <span class=\"token function\">scanf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%d %d&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>a<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>b<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u8c03\u7528\u52a0\u6cd5\u51fd\u6570&#xff0c;\u63a5\u6536\u8fd4\u56de\u503c<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> r <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span>a<span class=\"token punctuation\">,<\/span> b<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u8f93\u51fa\u7ed3\u679c<\/span><br \/>\n    <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%d\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span> r<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <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>\u7b80\u5316\u7248\u672c<\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> x<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> y<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> x <span class=\"token operator\">&#043;<\/span> y<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<ul>\n<li>\u51fd\u6570\u7684\u53c2\u6570\u90e8\u5206\u8981\u4ea4\u4ee3\u6e05\u695a&#xff1a;\u53c2\u6570\u4e2a\u6570\u3001\u6bcf\u4e2a\u53c2\u6570\u7684\u7c7b\u578b\u3001\u5f62\u53c2\u7684\u540d\u5b57\u3002<\/li>\n<li>\u51fd\u6570\u7684\u53c2\u6570\u3001\u8fd4\u56de\u7c7b\u578b\u3001\u51fd\u6570\u540d\u53ef\u6839\u636e\u5b9e\u9645\u9700\u6c42\u7075\u6d3b\u8bbe\u8ba1\u3002<\/li>\n<\/ul>\n<h3>4. \u5f62\u53c2\u548c\u5b9e\u53c2<\/h3>\n<p>\u5728\u51fd\u6570\u4f7f\u7528\u8fc7\u7a0b\u4e2d&#xff0c;\u53c2\u6570\u5206\u4e3a\u5b9e\u9645\u53c2\u6570&#xff08;\u5b9e\u53c2&#xff09;\u548c\u5f62\u5f0f\u53c2\u6570&#xff08;\u5f62\u53c2&#xff09;\u3002<\/p>\n<h4>4.1 \u5b9e\u53c2<\/h4>\n<p>\u8c03\u7528\u51fd\u6570\u65f6\u4f20\u9012\u7ed9\u51fd\u6570\u7684\u53c2\u6570\u79f0\u4e3a\u5b9e\u53c2&#xff08;\u5b9e\u9645\u53c2\u6570&#xff09;\u3002\u4f8b\u5982\u4e0a\u8ff0\u52a0\u6cd5\u51fd\u6570\u4e2d&#xff0c;main\u51fd\u6570\u91cc\u8c03\u7528Add(a, b)\u65f6&#xff0c;a\u548cb\u5c31\u662f\u5b9e\u53c2&#xff0c;\u662f\u771f\u5b9e\u4f20\u9012\u7ed9\u51fd\u6570\u7684\u503c\u3002<\/p>\n<h4>4.2 \u5f62\u53c2<\/h4>\n<p>\u5b9a\u4e49\u51fd\u6570\u65f6&#xff0c;\u51fd\u6570\u540d\u540e\u62ec\u53f7\u4e2d\u7684\u53c2\u6570\u79f0\u4e3a\u5f62\u53c2&#xff08;\u5f62\u5f0f\u53c2\u6570&#xff09;\u3002\u4f8b\u5982\u52a0\u6cd5\u51fd\u6570Add(int x, int y)\u4e2d\u7684x\u548cy&#xff0c;\u4ec5\u5728\u51fd\u6570\u88ab\u8c03\u7528\u65f6\u624d\u4f1a\u7533\u8bf7\u5185\u5b58\u7a7a\u95f4&#xff08;\u5373\u5f62\u53c2\u5b9e\u4f8b\u5316&#xff09;&#xff0c;\u7528\u4e8e\u5b58\u653e\u5b9e\u53c2\u4f20\u9012\u7684\u503c&#xff1b;\u82e5\u51fd\u6570\u672a\u88ab\u8c03\u7528&#xff0c;\u5f62\u53c2\u4e0d\u4f1a\u771f\u5b9e\u5b58\u5728\u3002<\/p>\n<h4>4.3 \u5b9e\u53c2\u548c\u5f62\u53c2\u7684\u5173\u7cfb<\/h4>\n<p>\u5b9e\u53c2\u662f\u4f20\u9012\u7ed9\u5f62\u53c2\u7684\u503c&#xff0c;\u4f46\u4e8c\u8005\u662f\u72ec\u7acb\u7684\u5185\u5b58\u7a7a\u95f4\u3002 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260213105026-698f01f2abed3.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" width=\"600\" \/> \u901a\u8fc7\u8c03\u8bd5\u8be5\u4ee3\u7801\u53ef\u4ee5\u770b\u5230&#xff0c;\u5f62\u53c2x\u548cy\u786e\u5b9e\u5f97\u5230\u4e86\u5b9e\u53c2a\u548cb\u7684\u503c&#xff0c;\u4f46\u662fx\u548cy\u7684\u5730\u5740\u548ca\u548cb\u7684\u5730\u5740\u662f\u4e0d\u540c\u7684&#xff0c;\u5373\u5f62\u53c2\u662f\u5b9e\u53c2\u7684\u4e00\u4efd\u4e34\u65f6\u62f7\u8d1d\u3002<\/p>\n<h3>5. return\u8bed\u53e5<\/h3>\n<p>return\u8bed\u53e5\u662f\u51fd\u6570\u4e2d\u91cd\u8981\u7684\u5173\u952e\u5b57&#xff0c;\u4f7f\u7528\u6ce8\u610f\u4e8b\u9879\u5982\u4e0b&#xff1a;<\/p>\n<li>return\u540e\u53ef\u8ddf\u6570\u503c\u6216\u8868\u8fbe\u5f0f&#xff0c;\u82e5\u4e3a\u8868\u8fbe\u5f0f\u5219\u5148\u6267\u884c\u8868\u8fbe\u5f0f&#xff0c;\u518d\u8fd4\u56de\u7ed3\u679c\u3002<\/li>\n<li>return\u540e\u53ef\u65e0\u5185\u5bb9&#xff08;\u76f4\u63a5\u5199return;&#xff09;&#xff0c;\u9002\u7528\u4e8e\u8fd4\u56de\u7c7b\u578b\u4e3avoid\u7684\u51fd\u6570\u3002<\/li>\n<li>return\u8bed\u53e5\u6267\u884c\u540e&#xff0c;\u51fd\u6570\u7acb\u5373\u8fd4\u56de&#xff0c;\u540e\u7eed\u4ee3\u7801\u4e0d\u518d\u6267\u884c\u3002<\/li>\n<li>\u8fd4\u56de\u503c\u4e0e\u51fd\u6570\u8fd4\u56de\u7c7b\u578b\u4e0d\u4e00\u81f4\u65f6&#xff0c;\u7cfb\u7edf\u4f1a\u81ea\u52a8\u9690\u5f0f\u8f6c\u6362\u4e3a\u51fd\u6570\u8fd4\u56de\u7c7b\u578b\u3002<\/li>\n<li>\u82e5\u51fd\u6570\u5305\u542bif\u7b49\u5206\u652f\u8bed\u53e5&#xff0c;\u9700\u4fdd\u8bc1\u6bcf\u79cd\u5206\u652f\u60c5\u51b5\u90fd\u6709return\u8fd4\u56de&#xff0c;\u5426\u5219\u4f1a\u7f16\u8bd1\u9519\u8bef\u3002<\/li>\n<li>\u51fd\u6570\u672a\u5199\u8fd4\u56de\u7c7b\u578b\u65f6&#xff0c;\u7f16\u8bd1\u5668\u9ed8\u8ba4\u8fd4\u56de\u7c7b\u578b\u4e3aint\u3002<\/li>\n<li>\u51fd\u6570\u58f0\u660e\u4e86\u8fd4\u56de\u7c7b\u578b&#xff0c;\u4f46\u672a\u4f7f\u7528return\u8fd4\u56de\u503c&#xff0c;\u5176\u8fd4\u56de\u503c\u662f\u672a\u77e5\u7684\u3002<\/li>\n<h3>6. \u6570\u7ec4\u505a\u51fd\u6570\u53c2\u6570<\/h3>\n<p>\u5f53\u5728\u51fd\u6570\u4e2d\u9700\u8981\u64cd\u4f5c\u6570\u7ec4\u65f6&#xff0c;\u8981\u5c06\u6570\u7ec4\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9\u51fd\u6570\u3002<\/p>\n<p>\u6570\u7ec4\u4f20\u53c2\u7684\u91cd\u70b9&#xff1a;<\/p>\n<li>\u5f62\u53c2\u4e2a\u6570\u9700\u4e0e\u5b9e\u53c2\u5339\u914d&#xff1b;<\/li>\n<li>\u5b9e\u53c2\u4e3a\u6570\u7ec4\u65f6&#xff0c;\u5f62\u53c2\u53ef\u5199\u6210\u6570\u7ec4\u5f62\u5f0f&#xff1b;<\/li>\n<li>\u4e00\u7ef4\u6570\u7ec4\u5f62\u53c2\u7684\u5927\u5c0f\u53ef\u7701\u7565&#xff1b;<\/li>\n<li>\u4e8c\u7ef4\u6570\u7ec4\u5f62\u53c2\u7684\u884c\u53ef\u7701\u7565&#xff0c;\u4f46\u5217\u4e0d\u80fd\u7701\u7565&#xff1b;<\/li>\n<li>\u6570\u7ec4\u4f20\u53c2\u65f6&#xff0c;\u5f62\u53c2\u4e0d\u4f1a\u521b\u5efa\u65b0\u6570\u7ec4&#xff0c;\u5f62\u53c2\u64cd\u4f5c\u7684\u662f\u5b9e\u53c2\u5bf9\u5e94\u7684\u539f\u6570\u7ec4\u3002<\/li>\n<p>\u793a\u4f8b&#xff1a;\u5199\u4e00\u4e2a\u51fd\u6570\u5c06\u4e00\u4e2a\u6574\u578b\u6570\u7ec4\u7684\u5185\u5bb9\u5168\u90e8\u7f6e\u4e3a-1&#xff0c;\u518d\u5199\u4e00\u4e2a\u51fd\u6570\u6253\u5370\u6570\u7ec4\u7684\u5185\u5bb9\u3002<\/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;stdio.h&gt;<\/span><\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u51fd\u6570set_arr&#xff1a;\u5c06\u6574\u578b\u6570\u7ec4\u6240\u6709\u5143\u7d20\u7f6e\u4e3a-1<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">set_arr<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> arr<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> sz<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">for<\/span><span class=\"token punctuation\">(<\/span>i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> sz<span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        arr<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><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 comment\">\/\/ \u51fd\u6570print_arr&#xff1a;\u6253\u5370\u6570\u7ec4\u5185\u5bb9<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">print_arr<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> arr<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> sz<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">for<\/span><span class=\"token punctuation\">(<\/span>i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> sz<span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%d &#034;<\/span><span class=\"token punctuation\">,<\/span> arr<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\\\\n&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<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 \/>\n    <span class=\"token keyword\">int<\/span> arr<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">6<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">7<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">8<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">9<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> sz <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">)<\/span><span class=\"token operator\">\/<\/span><span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u8ba1\u7b97\u6570\u7ec4\u5143\u7d20\u4e2a\u6570<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u8c03\u7528\u51fd\u6570<\/span><br \/>\n    <span class=\"token function\">set_arr<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">,<\/span> sz<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">print_arr<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">,<\/span> sz<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <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<h3>7. \u5d4c\u5957\u8c03\u7528\u548c\u94fe\u5f0f\u8bbf\u95ee<\/h3>\n<h4>7.1 \u5d4c\u5957\u8c03\u7528<\/h4>\n<p>\u51fd\u6570\u4e4b\u95f4\u7684\u4e92\u76f8\u8c03\u7528\u79f0\u4e3a\u5d4c\u5957\u8c03\u7528&#xff0c;\u5c31\u50cf\u4e50\u9ad8\u96f6\u4ef6\u914d\u5408\u642d\u5efa\u51fa\u590d\u6742\u6a21\u578b&#xff0c;\u51fd\u6570\u901a\u8fc7\u5d4c\u5957\u8c03\u7528\u80fd\u5b9e\u73b0\u5927\u578b\u7a0b\u5e8f\u7684\u529f\u80fd\u3002<\/p>\n<p>\u793a\u4f8b&#xff1a;\u8ba1\u7b97\u67d0\u5e74\u67d0\u6708\u7684\u5929\u6570<\/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;stdio.h&gt;<\/span><\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u51fd\u6570is_leap_year&#xff1a;\u5224\u65ad\u662f\u5426\u4e3a\u95f0\u5e74<\/span><br \/>\n<span class=\"token keyword\">int<\/span> <span class=\"token function\">is_leap_year<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> y<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>y<span class=\"token operator\">%<\/span><span class=\"token number\">4<\/span><span class=\"token operator\">&#061;&#061;<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&amp;&amp;<\/span><span class=\"token punctuation\">(<\/span>y<span class=\"token operator\">%<\/span><span class=\"token number\">100<\/span><span class=\"token operator\">!&#061;<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">||<\/span><span class=\"token punctuation\">(<\/span>y<span class=\"token operator\">%<\/span><span class=\"token number\">400<\/span><span class=\"token operator\">&#061;&#061;<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">else<\/span><br \/>\n        <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><span class=\"token comment\">\/\/ \u51fd\u6570get_days_of_month&#xff1a;\u8ba1\u7b97\u67d0\u6708\u7684\u5929\u6570<\/span><br \/>\n<span class=\"token keyword\">int<\/span> <span class=\"token function\">get_days_of_month<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> y<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> m<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> days<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">31<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">28<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">31<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">30<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">31<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">30<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">31<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">31<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">30<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">31<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">30<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">31<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> day <span class=\"token operator\">&#061;<\/span> days<span class=\"token punctuation\">[<\/span>m<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u5d4c\u5957\u8c03\u7528is_leap_year\u51fd\u6570<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token function\">is_leap_year<\/span><span class=\"token punctuation\">(<\/span>y<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&amp;&amp;<\/span> m <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        day <span class=\"token operator\">&#043;&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u95f0\u5e742\u6708\u52a01\u5929<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> day<span class=\"token punctuation\">;<\/span><br \/>\n<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 \/>\n    <span class=\"token keyword\">int<\/span> y <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> m <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">scanf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%d %d&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>y<span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>m<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u8c03\u7528\u51fd\u6570<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> d <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">get_days_of_month<\/span><span class=\"token punctuation\">(<\/span>y<span class=\"token punctuation\">,<\/span> m<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%d\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span> d<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <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;\u51fd\u6570\u4e0d\u80fd\u5d4c\u5957\u5b9a\u4e49&#xff0c;\u53ea\u80fd\u5d4c\u5957\u8c03\u7528\u3002<\/p>\n<h4>7.2 \u94fe\u5f0f\u8bbf\u95ee<\/h4>\n<p>\u5c06\u4e00\u4e2a\u51fd\u6570\u7684\u8fd4\u56de\u503c\u4f5c\u4e3a\u53e6\u4e00\u4e2a\u51fd\u6570\u7684\u53c2\u6570&#xff0c;\u50cf\u94fe\u6761\u4e00\u6837\u4e32\u8d77\u51fd\u6570&#xff0c;\u79f0\u4e3a\u94fe\u5f0f\u8bbf\u95ee\u3002<\/p>\n<p>\u793a\u4f8b1&#xff1a;\u7b80\u5316\u5b57\u7b26\u4e32\u957f\u5ea6\u6253\u5370<\/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;stdio.h&gt;<\/span><\/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.h&gt;<\/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><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token comment\">\/\/ \u94fe\u5f0f\u8bbf\u95ee&#xff1a;strlen\u7684\u8fd4\u56de\u503c\u4f5c\u4e3aprintf\u7684\u53c2\u6570<\/span><br \/>\n    <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%zu\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token function\">strlen<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;abcdef&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <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>\u793a\u4f8b2&#xff1a;\u591a\u5c42printf\u94fe\u5f0f\u8c03\u7528<\/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;stdio.h&gt;<\/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><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%d&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%d&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%d&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">43<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <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<li>printf\u51fd\u6570\u7684\u8fd4\u56de\u503c\u662f\u6253\u5370\u5728\u5c4f\u5e55\u4e0a\u7684\u5b57\u7b26\u4e2a\u6570\u3002<\/li>\n<li>\u6700\u5185\u5c42printf(&#034;%d&#034;, 43)&#xff1a;\u6253\u5370&#034;43&#034;&#xff08;2\u4e2a\u5b57\u7b26&#xff09;&#xff0c;\u8fd4\u56de2&#xff1b;<\/li>\n<li>\u4e2d\u5c42printf(&#034;%d&#034;, 2)&#xff1a;\u6253\u5370&#034;2&#034;&#xff08;1\u4e2a\u5b57\u7b26&#xff09;&#xff0c;\u8fd4\u56de1&#xff1b;<\/li>\n<li>\u6700\u5916\u5c42printf(&#034;%d&#034;, 1)&#xff1a;\u6253\u5370&#034;1&#034;&#xff0c;\u6700\u7ec8\u8f93\u51fa&#034;4321&#034;\u3002<\/li>\n<h3>8. \u51fd\u6570\u7684\u58f0\u660e\u548c\u5b9a\u4e49<\/h3>\n<h4>8.1 \u5355\u4e2a\u6587\u4ef6<\/h4>\n<p>\u4e00\u822c\u6211\u4eec\u5728\u4f7f\u7528\u51fd\u6570\u7684\u65f6\u5019&#xff0c;\u5c06\u51fd\u6570\u5b9a\u4e49\u5199\u5728\u51fd\u6570\u8c03\u7528\u4e4b\u524d\u3002 \u793a\u4f8b&#xff1a;\u5199\u4e00\u4e2a\u51fd\u6570\u5224\u65ad\u4e00\u5e74\u662f\u5426\u662f\u95f0\u5e74\u3002<\/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;stido.h&gt;<\/span><\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u51fd\u6570\u5b9a\u4e49<\/span><br \/>\n<span class=\"token comment\">\/\/ \u51fd\u6570is_leap_year&#xff1a;\u5224\u65ad\u4e00\u5e74\u662f\u4e0d\u662f\u95f0\u5e74<\/span><br \/>\n<span class=\"token keyword\">int<\/span> <span class=\"token function\">is_leap_year<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> y<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>y<span class=\"token operator\">%<\/span><span class=\"token number\">4<\/span><span class=\"token operator\">&#061;&#061;<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&amp;&amp;<\/span><span class=\"token punctuation\">(<\/span>y<span class=\"token operator\">%<\/span><span class=\"token number\">100<\/span><span class=\"token operator\">!&#061;<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">||<\/span> <span class=\"token punctuation\">(<\/span>y<span class=\"token operator\">%<\/span><span class=\"token number\">400<\/span><span class=\"token operator\">&#061;&#061;<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">else<\/span><br \/>\n        <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><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 \/>\n    <span class=\"token keyword\">int<\/span> y <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">scanf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%d&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>y<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u51fd\u6570\u8c03\u7528<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> r <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">is_leap_year<\/span><span class=\"token punctuation\">(<\/span>y<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>r <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u95f0\u5e74\\\\n&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">else<\/span><br \/>\n        <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u975e\u95f0\u5e74\\\\n&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <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>\u8fd9\u79cd\u573a\u666f\u4e0b\u7f16\u8bd1\u6ca1\u6709\u51fa\u73b0\u95ee\u9898\u3002<\/p>\n<p>\u90a3\u5982\u679c\u6211\u4eec\u5e0c\u671b\u5c06\u51fd\u6570\u5b9a\u4e49\u653e\u5728\u51fd\u6570\u8c03\u7528\u540e&#xff0c;\u5982\u4e0b&#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;stdio.h&gt;<\/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><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> y <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">scanf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%d&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>y<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u51fd\u6570\u8c03\u7528<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> r <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">is_leap_year<\/span><span class=\"token punctuation\">(<\/span>y<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>r <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u95f0\u5e74\\\\n&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">else<\/span><br \/>\n        <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u975e\u95f0\u5e74\\\\n&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <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><span class=\"token comment\">\/\/ \u51fd\u6570\u5b9a\u4e49<\/span><br \/>\n<span class=\"token keyword\">int<\/span> <span class=\"token function\">is_leap_year<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> y<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>y<span class=\"token operator\">%<\/span><span class=\"token number\">4<\/span><span class=\"token operator\">&#061;&#061;<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&amp;&amp;<\/span><span class=\"token punctuation\">(<\/span>y<span class=\"token operator\">%<\/span><span class=\"token number\">100<\/span><span class=\"token operator\">!&#061;<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">||<\/span> <span class=\"token punctuation\">(<\/span>y<span class=\"token operator\">%<\/span><span class=\"token number\">400<\/span><span class=\"token operator\">&#061;&#061;<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">else<\/span><br \/>\n        <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>\u4ee3\u7801\u5728VS2022\u4e0a\u7f16\u8bd1&#xff0c;\u4f1a\u51fa\u73b0\u4e0b\u9762\u7684\u8b66\u544a\u4fe1\u606f\u3002 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260213105027-698f01f380d3a.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" width=\"600\" \/> \u8fd9\u662f\u56e0\u4e3aC\u8bed\u8a00\u7f16\u8bd1\u5668\u5bf9\u6e90\u4ee3\u7801\u8fdb\u884c\u7f16\u8bd1\u7684\u65f6\u5019&#xff0c;\u4ece\u7b2c1\u884c\u5f80\u4e0b\u626b\u63cf\u7684&#xff0c;\u5f53\u9047\u5230\u7b2c8\u884cis_leap_year\u51fd\u6570\u8c03\u7528\u7684\u65f6\u5019&#xff0c;\u5e76\u6ca1\u6709\u53d1\u73b0\u524d\u9762\u6709is_leap_year\u7684\u51fd\u6570\u5b9a\u4e49\u3002<\/p>\n<p>\u89e3\u51b3\u65b9\u6cd5&#xff1a;\u5728\u8c03\u7528\u51fd\u6570\u4e4b\u524d\u58f0\u660e\u51fd\u6570\u3002\u51fd\u6570\u58f0\u660e\u9700\u4ea4\u4ee3\u6e05\u695a\u8fd4\u56de\u7c7b\u578b\u3001\u51fd\u6570\u540d\u548c\u53c2\u6570\u7c7b\u578b&#xff0c;\u8bed\u6cd5\u4e3aret_type fun_name(\u53c2\u6570\u7c7b\u578b \u53c2\u6570\u540d)&#xff0c;\u53c2\u6570\u540d\u53ef\u7701\u7565\u3002<\/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;stdio.h&gt;<\/span><\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u51fd\u6570\u58f0\u660e<\/span><br \/>\n<span class=\"token keyword\">int<\/span> <span class=\"token function\">is_leap_year<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> y<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/\u53c2\u6570\u540dy\u53ef\u7701\u7565&#xff1a;int is_leap_year(int)<\/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 \/>\n    <span class=\"token keyword\">int<\/span> y <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">scanf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%d&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&amp;<\/span>y<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u51fd\u6570\u8c03\u7528<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> r <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">is_leap_year<\/span><span class=\"token punctuation\">(<\/span>y<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span>r <span class=\"token operator\">&#061;&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u95f0\u5e74\\\\n&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">else<\/span><br \/>\n        <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;\u975e\u95f0\u5e74\\\\n&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <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><span class=\"token comment\">\/\/ \u51fd\u6570\u5b9a\u4e49<\/span><br \/>\n<span class=\"token keyword\">int<\/span> <span class=\"token function\">is_leap_year<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> y<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">(<\/span>y<span class=\"token operator\">%<\/span><span class=\"token number\">4<\/span><span class=\"token operator\">&#061;&#061;<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&amp;&amp;<\/span><span class=\"token punctuation\">(<\/span>y<span class=\"token operator\">%<\/span><span class=\"token number\">100<\/span><span class=\"token operator\">!&#061;<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">||<\/span> <span class=\"token punctuation\">(<\/span>y<span class=\"token operator\">%<\/span><span class=\"token number\">400<\/span><span class=\"token operator\">&#061;&#061;<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">else<\/span><br \/>\n        <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>\u89c4\u5219&#xff1a;\u51fd\u6570\u8c03\u7528\u9700\u6ee1\u8db3\u201c\u5148\u58f0\u660e\u540e\u4f7f\u7528\u201d&#xff0c;\u51fd\u6570\u5b9a\u4e49\u672c\u8eab\u4e5f\u662f\u4e00\u79cd\u7279\u6b8a\u58f0\u660e&#xff0c;\u56e0\u6b64\u5b9a\u4e49\u5728\u8c03\u7528\u4e4b\u524d\u53ef\u65e0\u9700\u989d\u5916\u58f0\u660e\u3002<\/p>\n<h4>8.2 \u591a\u4e2a\u6587\u4ef6<\/h4>\n<p>\u4f01\u4e1a\u5f00\u53d1\u4e2d&#xff0c;\u4ee3\u7801\u5e38\u6309\u529f\u80fd\u62c6\u5206\u5230\u591a\u4e2a\u6587\u4ef6&#xff0c;\u4e00\u822c\u89c4\u5219\u5982\u4e0b&#xff1a;<\/p>\n<ul>\n<li>\u5934\u6587\u4ef6&#xff08;.h&#xff09;&#xff1a;\u5b58\u653e\u51fd\u6570\u58f0\u660e\u3001\u7c7b\u578b\u58f0\u660e&#xff1b;<\/li>\n<li>\u6e90\u6587\u4ef6&#xff08;.c&#xff09;&#xff1a;\u5b58\u653e\u51fd\u6570\u5b9e\u73b0\u3002<\/li>\n<\/ul>\n<p>\u793a\u4f8b&#xff1a;\u591a\u6587\u4ef6\u5b9e\u73b0\u52a0\u6cd5\u51fd\u6570 add.h<\/p>\n<p><span class=\"token comment\">\/\/ \u51fd\u6570\u58f0\u660e<\/span><br \/>\n<span class=\"token keyword\">int<\/span> <span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> x<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> y<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>add.c<\/p>\n<p><span class=\"token comment\">\/\/ \u51fd\u6570\u5b9a\u4e49<\/span><br \/>\n<span class=\"token keyword\">int<\/span> <span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> x<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> y<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> x <span class=\"token operator\">&#043;<\/span> y<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>test.c<\/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;stdio.h&gt;<\/span><\/span><br \/>\n<span class=\"token comment\">\/\/ \u5305\u542b\u81ea\u5b9a\u4e49\u5934\u6587\u4ef6&#xff0c;\u4f7f\u7528&#034;&#034;<\/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\">&#034;add.h&#034;<\/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><br \/>\n<span class=\"token punctuation\">{<\/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><br \/>\n    <span class=\"token comment\">\/\/ \u51fd\u6570\u8c03\u7528<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> c <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span>a<span class=\"token punctuation\">,<\/span> b<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%d\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span> c<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <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>\u8fd0\u884c\u7ed3\u679c&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260213105028-698f01f401dbc.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" width=\"600\" \/><\/p>\n<h4>8.3 static \u548c extern<\/h4>\n<h5>8.3.1 \u4f5c\u7528\u57df\u548c\u751f\u547d\u5468\u671f<\/h5>\n<p>\u4f5c\u7528\u57df&#xff1a;\u53d8\u91cf\/\u51fd\u6570\u7684\u53ef\u7528\u4ee3\u7801\u8303\u56f4\u3002<\/p>\n<li>\u5c40\u90e8\u53d8\u91cf\u7684\u4f5c\u7528\u57df\u662f\u53d8\u91cf\u6240\u5728\u7684\u5c40\u90e8\u8303\u56f4\u3002<\/li>\n<li>\u5168\u5c40\u53d8\u91cf\u7684\u4f5c\u7528\u57df\u662f\u6574\u4e2a\u5de5\u7a0b&#xff08;\u9879\u76ee&#xff09;\u3002<\/li>\n<p>\u751f\u547d\u5468\u671f&#xff1a;\u53d8\u91cf\u7684\u521b\u5efa&#xff08;\u7533\u8bf7\u5185\u5b58&#xff09;\u5230\u53d8\u91cf\u7684\u9500\u6bc1&#xff08;\u6536\u56de\u5185\u5b58&#xff09;\u4e4b\u95f4\u7684\u4e00\u4e2a\u65f6\u95f4\u6bb5\u3002<\/p>\n<li>\u5c40\u90e8\u53d8\u91cf\u7684\u751f\u547d\u5468\u671f\u662f&#xff1a;\u8fdb\u5165\u4f5c\u7528\u57df\u53d8\u91cf\u521b\u5efa\u2192\u751f\u547d\u5468\u671f\u5f00\u59cb&#xff0c;\u51fa\u4f5c\u7528\u57df\u2192\u751f\u547d\u5468\u671f\u7ed3\u675f\u3002<\/li>\n<li>\u5168\u5c40\u53d8\u91cf\u7684\u751f\u547d\u5468\u671f\u662f&#xff1a;\u6574\u4e2a\u7a0b\u5e8f\u7684\u751f\u547d\u5468\u671f\u3002<\/li>\n<h5>8.3.2 static \u548c extern \u7684\u7528\u9014<\/h5>\n<p>static\u548cextern\u90fd\u662fC\u8bed\u8a00\u4e2d\u7684\u5173\u952e\u5b57\u3002<\/p>\n<p>static \u53ef\u4ee5\u7528\u6765&#xff1a;<\/p>\n<ul>\n<li>\u4fee\u9970\u5c40\u90e8\u53d8\u91cf<\/li>\n<li>\u4fee\u9970\u5168\u5c40\u53d8\u91cf<\/li>\n<li>\u4fee\u9970\u51fd\u6570\u3002<\/li>\n<\/ul>\n<p>extern \u662f\u7528\u6765\u58f0\u660e\u5916\u90e8\u7b26\u53f7\u7684&#xff0c;\u5982\u679c\u4e00\u4e2a\u5168\u5c40\u7684\u7b26\u53f7\u5728A\u6587\u4ef6\u4e2d\u5b9a\u4e49\u7684&#xff0c;\u5728B\u6587\u4ef6\u4e2d\u60f3\u4f7f\u7528&#xff0c;\u5c31\u53ef\u4ee5\u4f7f\u7528 extern \u8fdb\u884c\u58f0\u660e&#xff0c;\u7136\u540e\u4f7f\u7528\u3002<\/p>\n<h5>8.3.3 static \u4fee\u9970\u5c40\u90e8\u53d8\u91cf<\/h5>\n<p>\u5bf9\u6bd4\u4ee3\u78011\u548c\u4ee3\u78012&#xff0c;\u7406\u89e3 static \u4fee\u9970\u5c40\u90e8\u53d8\u91cf\u7684\u610f\u4e49\u3002<\/p>\n<p>\u4ee3\u78011&#xff08;\u65e0static&#xff09;&#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;stdio.h&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">test<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%d &#034;<\/span><span class=\"token punctuation\">,<\/span> i<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/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><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">for<\/span><span class=\"token punctuation\">(<\/span>i<span class=\"token operator\">&#061;<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&lt;<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">test<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <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>\u8f93\u51fa\u7ed3\u679c&#xff1a;<\/p>\n<p>1 1 1 1 1<\/p>\n<p>\u4ee3\u78012&#xff08;\u6709static&#xff09;&#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;stdio.h&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">test<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ static\u4fee\u9970\u5c40\u90e8\u53d8\u91cf<\/span><br \/>\n    <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%d &#034;<\/span><span class=\"token punctuation\">,<\/span> i<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/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><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">for<\/span><span class=\"token punctuation\">(<\/span>i<span class=\"token operator\">&#061;<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&lt;<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token function\">test<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <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>\u8f93\u51fa\u7ed3\u679c&#xff1a;<\/p>\n<p>1 2 3 4 5<\/p>\n<p>\u4ee3\u78011test\u51fd\u6570\u4e2d\u7684\u5c40\u90e8\u53d8\u91cfi\u662f\u6bcf\u6b21\u8fdb\u5165test\u51fd\u6570\u4f1a\u521b\u5efa\u53d8\u91cf&#xff08;\u751f\u547d\u5468\u671f\u5f00\u59cb&#xff0c;\u7533\u8bf7\u5185\u5b58&#xff09;\u5e76\u8d4b\u503c\u4e3a0&#xff0c;\u7136\u540e&#043;&#043;&#xff0c;\u518d\u6253\u5370&#xff0c;\u51fa\u51fd\u6570\u7684\u65f6\u5019\u9500\u6bc1\u53d8\u91cf&#xff08;\u751f\u547d\u5468\u671f\u7ed3\u675f&#xff0c;\u6536\u56de\u5185\u5b58&#xff09;\u3002 \u4ee3\u78012test\u51fd\u6570\u4e2d\u7684i\u521b\u5efa\u597d\u540e&#xff0c;\u88abstatic\u4fee\u9970\u540e\u5b58\u50a8\u5728\u9759\u6001\u533a&#xff0c;\u751f\u547d\u5468\u671f\u4e0e\u7a0b\u5e8f\u4e00\u81f4&#xff0c;\u51fa\u51fd\u6570\u7684\u65f6\u5019\u662f\u4e0d\u4f1a\u9500\u6bc1\u7684&#xff0c;\u91cd\u65b0\u8fdb\u5165\u51fd\u6570\u4e5f\u5c31\u4e0d\u4f1a\u91cd\u65b0\u521b\u5efa\u53d8\u91cf&#xff0c;\u76f4\u63a5\u4e0a\u6b21\u7d2f\u79ef\u7684\u6570\u503c\u7ee7\u7eed\u8ba1\u7b97\u3002 \u7ed3\u8bba&#xff1a;static\u4fee\u9970\u5c40\u90e8\u53d8\u91cf\u6539\u53d8\u4e86\u53d8\u91cf\u7684\u751f\u547d\u5468\u671f&#xff08;\u4ece\u201c\u5c40\u90e8\u4f5c\u7528\u57df\u201d\u53d8\u4e3a\u201c\u7a0b\u5e8f\u8fd0\u884c\u671f\u95f4\u201d&#xff09;&#xff0c;\u672c\u8d28\u662f\u6539\u53d8\u4e86\u53d8\u91cf\u7684\u5b58\u50a8\u7c7b\u578b&#xff08;\u4ece\u5185\u5b58\u7684\u201c\u6808\u533a\u201d\u5b58\u50a8\u5230\u4e86\u201c\u9759\u6001\u533a\u201d&#xff09;&#xff0c;\u5b58\u50a8\u5728\u9759\u6001\u533a\u7684\u53d8\u91cf\u548c\u5168\u5c40\u53d8\u91cf\u662f\u4e00\u6837\u7684&#xff0c;\u751f\u547d\u5468\u671f\u5c31\u548c\u7a0b\u5e8f\u7684\u751f\u547d\u5468\u671f\u4e00\u6837\u4e86&#xff0c;\u53ea\u6709\u7a0b\u5e8f\u7ed3\u675f&#xff0c;\u53d8\u91cf\u624d\u9500\u6bc1&#xff0c;\u5185\u5b58\u624d\u56de\u6536\u3002\u4f46\u4f5c\u7528\u57df\u4e0d\u53d8\u7684\u3002 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260213105028-698f01f4e66a9.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" width=\"600\" \/> \u4f7f\u7528\u5efa\u8bae&#xff1a;\u82e5\u53d8\u91cf\u51fa\u51fd\u6570\u540e\u9700\u4fdd\u7559\u503c&#xff0c;\u4e0b\u6b21\u8fdb\u5165\u51fd\u6570\u7ee7\u7eed\u4f7f\u7528&#xff0c;\u53ef\u4f7f\u7528static\u4fee\u9970\u3002<\/p>\n<h5>8.3.4 static \u4fee\u9970\u5168\u5c40\u53d8\u91cf<\/h5>\n<p>\u5bf9\u6bd4\u4ee3\u78011\u548c\u4ee3\u78012&#xff0c;\u7406\u89e3 static \u4fee\u9970\u5168\u5c40\u53d8\u91cf\u7684\u610f\u4e49\u3002<\/p>\n<p>\u4ee3\u78011&#xff08;\u65e0static&#xff09;&#xff1a;<\/p>\n<p>add.c<\/p>\n<p><span class=\"token keyword\">int<\/span> g_val <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">20<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5b9a\u4e49\u5168\u5c40\u53d8\u91cf<\/span><\/p>\n<p>test.c<\/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;stdio.h&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">extern<\/span> <span class=\"token keyword\">int<\/span> g_val<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u58f0\u660e\u5916\u90e8\u5168\u5c40\u53d8\u91cf<\/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><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%d\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span> g_val<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <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>\u8f93\u51fa\u7ed3\u679c&#xff1a;<\/p>\n<p>20<\/p>\n<p>\u4ee3\u78012&#xff08;\u6709static&#xff09;&#xff1a;<\/p>\n<p>add.c<\/p>\n<p><span class=\"token keyword\">static<\/span> <span class=\"token keyword\">int<\/span> g_val <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">20<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ static\u4fee\u9970\u5168\u5c40\u53d8\u91cf<\/span><\/p>\n<p>test.c<\/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;stdio.h&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">extern<\/span> <span class=\"token keyword\">int<\/span> g_val<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u58f0\u660e\u5916\u90e8\u5168\u5c40\u53d8\u91cf<\/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><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%d\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span> g_val<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <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>\u7f16\u8bd1\u7ed3\u679c&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260213105029-698f01f5b9305.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" width=\"400\" \/><\/p>\n<p>\u4ee3\u78011\u6b63\u5e38\u8fd0\u884c&#xff0c;\u5168\u5c40\u53d8\u91cf\u9ed8\u8ba4\u5177\u6709\u201c\u5916\u90e8\u94fe\u63a5\u5c5e\u6027\u201d&#xff0c;\u53ea\u8981\u9002\u5f53\u58f0\u660e\u5c31\u53ef\u8de8\u6587\u4ef6\u4f7f\u7528\u3002 \u4ee3\u78012\u7f16\u8bd1\u62a5\u9519&#xff0c;\u56e0\u4e3a\u5168\u5c40\u53d8\u91cf\u53d8\u4e3a\u4e86\u201c\u5185\u90e8\u94fe\u63a5\u5c5e\u6027\u201d&#xff0c;\u4ec5\u6587\u4ef6\u5185\u90e8\u53ef\u8bbf\u95ee\u3002 \u7ed3\u8bba&#xff1a;static\u4fee\u9970\u5168\u5c40\u53d8\u91cf\u6539\u53d8\u4e86\u53d8\u91cf\u7684\u8bbf\u95ee\u6743\u9650&#xff08;\u4ece\u201c\u53ef\u8de8\u6587\u4ef6\u53ef\u8bbf\u95ee\u201d\u53d8\u4e3a\u201c\u4ec5\u6587\u4ef6\u5185\u90e8\u53ef\u8bbf\u95ee\u201d&#xff09;&#xff0c;\u672c\u8d28\u662f\u6539\u53d8\u4e86\u53d8\u91cf\u7684\u8fde\u63a5\u5c5e\u6027&#xff08;\u4ece\u201c\u5916\u90e8\u94fe\u63a5\u5c5e\u6027\u201d\u53d8\u4e3a\u201c\u5185\u90e8\u94fe\u63a5\u5c5e\u6027\u201d&#xff09;&#xff0c;\u53d8\u91cf\u53d8\u4e3a \u201c\u5185\u90e8\u94fe\u63a5\u5c5e\u6027\u201d\u5c31\u53ea\u80fd\u5728\u81ea\u5df1\u6240\u5728\u7684\u6e90\u6587\u4ef6\u5185\u90e8\u4f7f\u7528\u4e86&#xff0c;\u5176\u4ed6\u6e90\u6587\u4ef6\u5373\u4f7f\u58f0\u660e\u4e86\u4e5f\u65e0\u6cd5\u6b63\u5e38\u4f7f\u7528\u3002<\/p>\n<p>\u4f7f\u7528\u5efa\u8bae&#xff1a;\u5982\u679c\u4e00\u4e2a\u5168\u5c40\u53d8\u91cf&#xff0c;\u53ea\u60f3\u5728\u6240\u5728\u7684\u6e90\u6587\u4ef6\u5185\u90e8\u4f7f\u7528&#xff0c;\u4e0d\u60f3\u88ab\u5176\u4ed6\u6587\u4ef6\u53d1\u73b0&#xff0c;\u5c31\u53ef\u4ee5\u4f7f\u7528 static \u4fee\u9970\u3002<\/p>\n<h5>8.3.5 static \u4fee\u9970\u51fd\u6570<\/h5>\n<p>\u5bf9\u6bd4\u4ee3\u78011\u548c\u4ee3\u78012&#xff0c;\u7406\u89e3 static \u4fee\u9970\u51fd\u6570\u7684\u610f\u4e49\u3002 \u4ee3\u78011&#xff08;\u65e0static&#xff09;&#xff1a; add.c<\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> x<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> y<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> x<span class=\"token operator\">&#043;<\/span>y<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>test.c<\/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;stdio.h&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">extern<\/span> <span class=\"token keyword\">int<\/span> <span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> x<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> y<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u58f0\u660e\u5916\u90e8\u51fd\u6570<\/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><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%d\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <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>\u8f93\u51fa\u7ed3\u679c&#xff1a;<\/p>\n<p>5<\/p>\n<p>\u4ee3\u78012&#xff08;\u6709static&#xff09;: add.c<\/p>\n<p><span class=\"token keyword\">static<\/span> <span class=\"token keyword\">int<\/span> <span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> x<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> y<span class=\"token punctuation\">)<\/span> <span class=\"token comment\">\/\/static\u4fee\u9970\u51fd\u6570<\/span><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> x<span class=\"token operator\">&#043;<\/span>y<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>test.c<\/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;stdio.h&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">extern<\/span> <span class=\"token keyword\">int<\/span> <span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> x<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> y<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u58f0\u660e\u5916\u90e8\u51fd\u6570<\/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><br \/>\n<span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%d\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token function\">Add<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">3<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <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>\u7f16\u8bd1\u7ed3\u679c&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260213105029-698f01f5c7df9.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" width=\"600\" \/><\/p>\n<p>\u4ee3\u78011\u6b63\u5e38\u8fd0\u884c&#xff0c;\u51fd\u6570\u9ed8\u8ba4\u5177\u6709\u201c\u5916\u90e8\u94fe\u63a5\u5c5e\u6027\u201d&#xff0c;\u53ea\u8981\u9002\u5f53\u58f0\u660e\u5c31\u53ef\u8de8\u6587\u4ef6\u4f7f\u7528\u3002 \u4ee3\u78012\u7f16\u8bd1\u62a5\u9519&#xff0c;\u56e0\u4e3a\u51fd\u6570 \u53d8\u4e3a\u4e86\u201c\u5185\u90e8\u94fe\u63a5\u5c5e\u6027\u201d&#xff0c;\u4ec5\u6587\u4ef6\u5185\u90e8\u53ef\u8bbf\u95ee\u3002 \u7ed3\u8bba&#xff1a;static\u4fee\u9970\u51fd\u6570\u540e&#xff0c;\u5176\u201c\u5916\u90e8\u94fe\u63a5\u5c5e\u6027\u201d\u53d8\u4e3a\u201c\u5185\u90e8\u94fe\u63a5\u5c5e\u6027\u201d&#xff0c;\u53ea\u80fd\u5728\u672c\u6e90\u6587\u4ef6\u5185\u4f7f\u7528&#xff0c;\u5176\u4ed6\u6587\u4ef6\u65e0\u6cd5\u8c03\u7528\u3002 \u4f7f\u7528\u5efa\u8bae&#xff1a;\u82e5\u51fd\u6570\u4ec5\u9700\u5728\u6240\u5728\u6e90\u6587\u4ef6\u5185\u90e8\u4f7f\u7528&#xff0c;\u4e0d\u60f3\u88ab\u5176\u4ed6\u6587\u4ef6\u8c03\u7528&#xff0c;\u53ef\u4f7f\u7528static\u4fee\u9970\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u76ee\u5f551. \u51fd\u6570\u7684\u6982\u5ff52. \u5e93\u51fd\u65702.1 \u6807\u51c6\u5e93\u3001\u5e93\u51fd\u6570\u3001\u5934\u6587\u4ef62.2 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