{"id":75255,"date":"2026-02-11T20:17:48","date_gmt":"2026-02-11T12:17:48","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/75255.html"},"modified":"2026-02-11T20:17:48","modified_gmt":"2026-02-11T12:17:48","slug":"c-%e8%af%ad%e8%a8%80-%e6%b7%b1%e5%85%a5%e7%90%86%e8%a7%a3%e6%8c%87%e9%92%88%ef%bc%88%e4%b8%89%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/75255.html","title":{"rendered":"C \u8bed\u8a00\u2014\u2014\u6df1\u5165\u7406\u89e3\u6307\u9488\uff08\u4e09\uff09"},"content":{"rendered":"<p>\u4ee5\u4e0b\u662f\u4e3a\u60a8\u8865\u5168\u5e76\u4f18\u5316\u7684\u535a\u5ba2\u5185\u5bb9&#xff0c;\u5305\u542b\u4e86\u5b57\u7b26\u6307\u9488\u3001\u6570\u7ec4\u6307\u9488\u548c\u51fd\u6570\u6307\u9488\u7684\u8be6\u7ec6\u89e3\u91ca\u3001\u4ee3\u7801\u793a\u4f8b\u53ca\u5176\u4f7f\u7528\u6ce8\u610f\u4e8b\u9879\u3002<\/p>\n<hr \/>\n<h3>\n<h3>\u6587\u7ae0\u76ee\u5f55<\/h3>\n<ul>\n<li>\n<ul>\n<li>&#064;[TOC](\u6587\u7ae0\u76ee\u5f55)<\/li>\n<\/ul>\n<\/li>\n<li>\u4e00\u3001\u5b57\u7b26\u6307\u9488\u53d8\u91cf<\/li>\n<li>\n<ul>\n<li>1. \u57fa\u672c\u6982\u5ff5\u4e0e\u5b58\u50a8<\/li>\n<li>\n<ul>\n<li>\u4ee3\u7801\u793a\u4f8b&#xff1a;<\/li>\n<\/ul>\n<\/li>\n<li>2. \u53ef\u5199\u5b57\u7b26\u4e32\u7684\u5b9e\u73b0<\/li>\n<\/ul>\n<\/li>\n<li>\u4e8c\u3001\u6570\u7ec4\u6307\u9488\u53d8\u91cf<\/li>\n<li>\n<ul>\n<li>1. \u57fa\u672c\u6982\u5ff5<\/li>\n<li>\n<ul>\n<li>\u4ee3\u7801\u793a\u4f8b&#xff1a;<\/li>\n<\/ul>\n<\/li>\n<li>2. \u4e0e\u6307\u9488\u6570\u7ec4\u7684\u533a\u522b<\/li>\n<\/ul>\n<\/li>\n<li>\u4e09\u3001\u51fd\u6570\u6307\u9488\u53d8\u91cf<\/li>\n<li>\n<ul>\n<li>1. \u57fa\u672c\u5b9a\u4e49\u4e0e\u4f7f\u7528<\/li>\n<li>\n<ul>\n<li>\u4ee3\u7801\u793a\u4f8b&#xff1a;<\/li>\n<\/ul>\n<\/li>\n<li>2. \u4f7f\u7528 &#096;typedef&#096; \u7b80\u5316<\/li>\n<li>\n<ul>\n<li>\u4ee3\u7801\u793a\u4f8b&#xff1a;<\/li>\n<\/ul>\n<\/li>\n<li>3. \u56de\u8c03\u51fd\u6570<\/li>\n<li>\n<ul>\n<li>\u4ee3\u7801\u793a\u4f8b&#xff08;qsort \u56de\u8c03&#xff09;&#xff1a;<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>\u56db\u3001\u603b\u7ed3<\/li>\n<\/ul>\n<\/h3>\n<h2>\u4e00\u3001\u5b57\u7b26\u6307\u9488\u53d8\u91cf<\/h2>\n<p>\u5b57\u7b26\u6307\u9488\u53d8\u91cf\u662f\u6307\u5411\u5b57\u7b26&#xff08;char&#xff09;\u6216\u5b57\u7b26\u6570\u7ec4&#xff08;\u5373\u5b57\u7b26\u4e32&#xff09;\u7684\u6307\u9488\u3002\u5728 C \u8bed\u8a00\u4e2d&#xff0c;\u5b57\u7b26\u4e32\u5b57\u9762\u91cf&#xff08;\u5982 &#034;Hello world.&#034;&#xff09;\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u5b57\u7b26\u6570\u7ec4&#xff0c;\u5176\u672c\u8d28\u662f\u4ee5 &#039;\\\\0&#039; \u7ed3\u5c3e\u7684\u5b57\u7b26\u5e8f\u5217\u3002<\/p>\n<h3>1. \u57fa\u672c\u6982\u5ff5\u4e0e\u5b58\u50a8<\/h3>\n<p>\u5728 C \u8bed\u8a00\u4e2d&#xff0c;\u5b57\u7b26\u4e32\u5b57\u9762\u91cf&#xff08;String Literal&#xff09;\u901a\u5e38\u5b58\u50a8\u5728\u53ea\u8bfb\u7684\u5e38\u91cf\u533a&#xff08;Data Segment&#xff09;\u4e2d\u3002\u8fd9\u610f\u5473\u7740\u5b83\u4eec\u5728\u7a0b\u5e8f\u8fd0\u884c\u671f\u95f4\u901a\u5e38\u662f\u4e0d\u53ef\u4fee\u6539\u7684\u3002\u5982\u679c\u5c1d\u8bd5\u4fee\u6539\u5b83\u4eec&#xff0c;\u4f1a\u5bfc\u81f4\u8fd0\u884c\u65f6\u9519\u8bef&#xff08;Segmentation Fault&#xff09;\u3002<\/p>\n<h4>\u4ee3\u7801\u793a\u4f8b&#xff1a;<\/h4>\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\">\/\/ \u9519\u8bef\u793a\u4f8b&#xff1a;\u5c1d\u8bd5\u4fee\u6539\u53ea\u8bfb\u5b57\u7b26\u4e32\u5b57\u9762\u91cf<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">char<\/span><span class=\"token operator\">*<\/span> pstr <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;Hello world.&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ pstr[0] &#061; &#039;h&#039;; \/\/ \u8fd0\u884c\u65f6\u9519\u8bef&#xff1a;\u4e0d\u53ef\u5199<\/span><\/p>\n<p>    <span class=\"token comment\">\/\/ \u6b63\u786e\u793a\u4f8b&#xff1a;\u6307\u5411\u5b57\u7b26\u4e32\u5b57\u9762\u91cf\u7684\u6307\u9488<\/span><br \/>\n    <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">char<\/span><span class=\"token operator\">*<\/span> pstr2 <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;Hello world.&#034;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%s\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span> pstr2<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;\u8fd9\u91cc\u7684 const char* \u58f0\u660e\u7684\u662f\u4e00\u4e2a\u6307\u5411\u5e38\u91cf\u5b57\u7b26\u7684\u6307\u9488&#xff0c;\u610f\u5473\u7740\u6307\u9488\u6307\u5411\u7684\u5185\u5bb9\u4e0d\u53ef\u4fee\u6539&#xff0c;\u4f46\u6307\u9488\u672c\u8eab&#xff08;\u5373\u5b58\u50a8\u7684\u5730\u5740&#xff09;\u662f\u53ef\u4ee5\u6539\u53d8\u7684[[1]][[2]][[3]]\u3002<\/p>\n<h3>2. \u53ef\u5199\u5b57\u7b26\u4e32\u7684\u5b9e\u73b0<\/h3>\n<p>\u5982\u679c\u4f60\u5e0c\u671b\u901a\u8fc7\u6307\u9488\u6765\u4fee\u6539\u5b57\u7b26\u4e32\u7684\u5185\u5bb9&#xff0c;\u6709\u4e24\u79cd\u5e38\u89c1\u65b9\u5f0f&#xff1a;<\/p>\n<li>\n<p>\u4f7f\u7528\u5b57\u7b26\u6570\u7ec4&#xff1a;<\/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\">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> <span class=\"token comment\">\/\/ \u5c06\u5b57\u7b26\u4e32\u5b57\u9762\u91cf\u590d\u5236\u5230\u6570\u7ec4\u4e2d<\/span><br \/>\n    str<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token char\">&#039;h&#039;<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5408\u6cd5&#xff1a;\u4fee\u6539\u6570\u7ec4\u5185\u5bb9<\/span><br \/>\n    <span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%s\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span> str<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>\u89e3\u91ca&#xff1a; char str[] &#061; &#034;Hello world.&#034;; \u5b9e\u9645\u4e0a\u662f\u5c06\u5b57\u7b26\u4e32\u5b57\u9762\u91cf\u7684\u5185\u5bb9\u590d\u5236\u4e86\u4e00\u4efd\u5230\u6808\u4e0a\u7684\u6570\u7ec4 str \u4e2d&#xff0c;\u8fd9\u4e2a\u6570\u7ec4\u662f\u53ef\u5199\u7684[[4]][[5]]\u3002<\/p>\n<\/li>\n<li>\n<p>\u4f7f\u7528 malloc \u52a8\u6001\u5206\u914d\u5185\u5b58&#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;stdlib.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 keyword\">char<\/span> <span class=\"token operator\">*<\/span>p <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">malloc<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">13<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token function\">strcpy<\/span><span class=\"token punctuation\">(<\/span>p<span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;Hello world.&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    p<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token char\">&#039;h&#039;<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5408\u6cd5<\/span><br \/>\n    <span class=\"token function\">free<\/span><span class=\"token punctuation\">(<\/span>p<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>\u89e3\u91ca&#xff1a; \u52a8\u6001\u5206\u914d\u7684\u5185\u5b58\u9ed8\u8ba4\u662f\u53ef\u5199\u7684&#xff0c;\u524d\u63d0\u662f\u4f60\u81ea\u884c\u5206\u914d\u4e86\u8db3\u591f\u7684\u7a7a\u95f4\u6765\u5b58\u50a8\u5b57\u7b26\u4e32\u3002<\/p>\n<\/li>\n<hr \/>\n<h2>\u4e8c\u3001\u6570\u7ec4\u6307\u9488\u53d8\u91cf<\/h2>\n<p>\u6570\u7ec4\u6307\u9488\u53d8\u91cf\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u6307\u9488\u53d8\u91cf&#xff0c;\u5b83\u5b58\u653e\u7684\u662f\u6574\u4e2a\u6570\u7ec4\u7684\u5730\u5740\u3002\u5b83\u4e0e\u666e\u901a\u6307\u9488\u7684\u4e3b\u8981\u533a\u522b\u5728\u4e8e\u201c\u6307\u5411\u7684\u5bf9\u8c61\u7c7b\u578b\u201d\u4e0d\u540c\u3002<\/p>\n<h3>1. \u57fa\u672c\u6982\u5ff5<\/h3>\n<p>\u6570\u7ec4\u6307\u9488\u53d8\u91cf\u6307\u5411\u7684\u662f\u4e00\u4e2a\u5b8c\u6574\u7684\u6570\u7ec4&#xff0c;\u800c\u4e0d\u662f\u6570\u7ec4\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u3002\u5b83\u7684\u5b9a\u4e49\u65b9\u5f0f\u901a\u5e38\u662f type (*ptr)[size]&#xff0c;\u5176\u4e2d type \u662f\u6570\u7ec4\u5143\u7d20\u7684\u7c7b\u578b&#xff0c;size \u662f\u6570\u7ec4\u7684\u957f\u5ea6\u3002<\/p>\n<h4>\u4ee3\u7801\u793a\u4f8b&#xff1a;<\/h4>\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 number\">10<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u58f0\u660e\u4e00\u4e2a\u5305\u542b 10 \u4e2a\u6574\u6570\u7684\u6570\u7ec4<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">*<\/span>p<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">10<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u58f0\u660e\u4e00\u4e2a\u6307\u5411\u5305\u542b 10 \u4e2a\u6574\u6570\u7684\u6570\u7ec4\u7684\u6307\u9488<\/span><br \/>\n    p <span class=\"token operator\">&#061;<\/span> <span class=\"token operator\">&amp;<\/span>arr<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u8fd9\u91cc\u53d6\u7684\u662f\u6570\u7ec4\u7684\u5730\u5740&#xff0c;\u800c\u4e0d\u662f\u6570\u7ec4\u9996\u5143\u7d20\u7684\u5730\u5740<\/span><br \/>\n    <span class=\"token punctuation\">(<\/span><span class=\"token operator\">*<\/span>p<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u901a\u8fc7\u6570\u7ec4\u6307\u9488\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20<\/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;p &#061; arr; \u662f\u9519\u8bef\u7684&#xff0c;arr \u4f1a\u9000\u5316\u4e3a\u6307\u5411\u9996\u5143\u7d20\u7684\u6307\u9488&#xff08;\u7c7b\u578b\u662f int*&#xff09;&#xff0c;\u800c p \u7684\u7c7b\u578b\u662f int (*)[10]&#xff0c;\u4e24\u8005\u7c7b\u578b\u4e0d\u5339\u914d[[6]][[7]]\u3002<\/p>\n<h3>2. \u4e0e\u6307\u9488\u6570\u7ec4\u7684\u533a\u522b<\/h3>\n<p>\u6570\u7ec4\u6307\u9488\u548c\u6307\u9488\u6570\u7ec4\u662f\u4e24\u4e2a\u5b8c\u5168\u4e0d\u540c\u7684\u6982\u5ff5&#xff0c;\u5bb9\u6613\u6df7\u6dc6\u3002<\/p>\n<table>\n<tr>\u6982\u5ff5\u5b9a\u4e49\u7528\u9014<\/tr>\n<tbody>\n<tr>\n<td>\u6570\u7ec4\u6307\u9488<\/td>\n<td>type (*ptr)[size];\u6307\u5411\u4e00\u4e2a\u5b8c\u6574\u7684\u6570\u7ec4<\/td>\n<td>\u7528\u4e8e\u5904\u7406\u4e8c\u7ef4\u6570\u7ec4\u3001\u51fd\u6570\u53c2\u6570\u4f20\u9012\u7b49\u573a\u666f<\/td>\n<\/tr>\n<tr>\n<td>\u6307\u9488\u6570\u7ec4<\/td>\n<td>type *ptr[size];\u6570\u7ec4\u7684\u6bcf\u4e2a\u5143\u7d20\u90fd\u662f\u4e00\u4e2a\u6307\u9488<\/td>\n<td>\u7528\u4e8e\u5b58\u50a8\u591a\u4e2a\u5b57\u7b26\u4e32\u7684\u5730\u5740\u3001\u51fd\u6570\u6307\u9488\u7b49<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u793a\u4f8b&#xff1a;\u6307\u9488\u6570\u7ec4&#xff08;\u5b57\u7b26\u4e32\u6570\u7ec4&#xff09;<\/p>\n<p><span class=\"token keyword\">const<\/span> <span class=\"token keyword\">char<\/span> <span class=\"token operator\">*<\/span>mytalents<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;Coding&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;Reading&#034;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token string\">&#034;Music&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u6307\u9488\u6570\u7ec4<\/span><br \/>\n<span class=\"token function\">printf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%s\\\\n&#034;<\/span><span class=\"token punctuation\">,<\/span> mytalents<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\">\/\/ \u8f93\u51fa &#034;Coding&#034;<\/span><\/p>\n<p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d&#xff0c;mytalents \u662f\u4e00\u4e2a\u6307\u9488\u6570\u7ec4&#xff0c;\u6bcf\u4e2a\u5143\u7d20\u662f\u6307\u5411\u5b57\u7b26\u4e32\u5b57\u9762\u91cf\u7684\u6307\u9488[[8]][[9]]\u3002<\/p>\n<hr \/>\n<h2>\u4e09\u3001\u51fd\u6570\u6307\u9488\u53d8\u91cf<\/h2>\n<p>\u51fd\u6570\u6307\u9488\u662f\u6307\u5411\u51fd\u6570\u7684\u6307\u9488&#xff0c;\u5141\u8bb8\u4f60\u5c06\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9\u5176\u4ed6\u51fd\u6570&#xff0c;\u6216\u5728\u8fd0\u884c\u65f6\u52a8\u6001\u51b3\u5b9a\u8c03\u7528\u54ea\u4e2a\u51fd\u6570\u3002\u8fd9\u5728\u5b9e\u73b0\u56de\u8c03\u51fd\u6570&#xff08;Callback&#xff09;\u548c\u591a\u6001\u6027\u65f6\u975e\u5e38\u6709\u7528\u3002<\/p>\n<h3>1. \u57fa\u672c\u5b9a\u4e49\u4e0e\u4f7f\u7528<\/h3>\n<p>\u51fd\u6570\u6307\u9488\u7684\u5b9a\u4e49\u8bed\u6cd5\u76f8\u5bf9\u590d\u6742&#xff0c;\u6838\u5fc3\u5728\u4e8e\u6b63\u786e\u533a\u5206\u201c\u8fd4\u56de\u7c7b\u578b\u201d\u548c\u201c\u53c2\u6570\u5217\u8868\u201d\u3002<\/p>\n<h4>\u4ee3\u7801\u793a\u4f8b&#xff1a;<\/h4>\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\">\/\/ \u5b9a\u4e49\u4e00\u4e2a\u666e\u901a\u51fd\u6570<\/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> a<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> b<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> a <span class=\"token operator\">&#043;<\/span> b<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u5b9a\u4e49\u51fd\u6570\u6307\u9488\u53d8\u91cf<\/span><br \/>\n<span class=\"token keyword\">int<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">*<\/span>func_ptr<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#061;<\/span> add<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ func_ptr \u6307\u5411 add \u51fd\u6570<\/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 keyword\">int<\/span> result <span class=\"token operator\">&#061;<\/span> <span class=\"token function\">func_ptr<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">5<\/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 comment\">\/\/ \u901a\u8fc7\u51fd\u6570\u6307\u9488\u8c03\u7528\u51fd\u6570<\/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> result<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u8f93\u51fa 8<\/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>\u89e3\u91ca&#xff1a;int (*func_ptr)(int, int) \u58f0\u660e\u4e86\u4e00\u4e2a\u6307\u5411\u8fd4\u56de int\u3001\u63a5\u53d7\u4e24\u4e2a int \u53c2\u6570\u7684\u51fd\u6570\u7684\u6307\u9488[[10]][[11]][[12]]\u3002<\/p>\n<h3>2. \u4f7f\u7528 typedef \u7b80\u5316<\/h3>\n<p>\u7531\u4e8e\u51fd\u6570\u6307\u9488\u7684\u58f0\u660e\u8bed\u6cd5\u590d\u6742&#xff0c;\u63a8\u8350\u4f7f\u7528 typedef \u4e3a\u5176\u5b9a\u4e49\u522b\u540d\u3002<\/p>\n<h4>\u4ee3\u7801\u793a\u4f8b&#xff1a;<\/h4>\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\">\/\/ \u4f7f\u7528 typedef \u5b9a\u4e49\u51fd\u6570\u6307\u9488\u7c7b\u578b<\/span><br \/>\n<span class=\"token keyword\">typedef<\/span> <span class=\"token keyword\">int<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">*<\/span>Operation<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u5b9a\u4e49\u4e24\u4e2a\u51fd\u6570<\/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> a<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> b<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">return<\/span> a <span class=\"token operator\">&#043;<\/span> b<span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token keyword\">int<\/span> <span class=\"token function\">sub<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> a<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> b<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token keyword\">return<\/span> a <span class=\"token operator\">&#8211;<\/span> b<span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u63a5\u53d7\u51fd\u6570\u6307\u9488\u4f5c\u4e3a\u53c2\u6570\u7684\u51fd\u6570<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">calculate<\/span><span class=\"token punctuation\">(<\/span>Operation op<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><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\">op<\/span><span class=\"token punctuation\">(<\/span>x<span class=\"token punctuation\">,<\/span> y<span class=\"token punctuation\">)<\/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> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">calculate<\/span><span class=\"token punctuation\">(<\/span>add<span class=\"token punctuation\">,<\/span> <span class=\"token number\">5<\/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 comment\">\/\/ \u8f93\u51fa 8<\/span><br \/>\n    <span class=\"token function\">calculate<\/span><span class=\"token punctuation\">(<\/span>sub<span class=\"token punctuation\">,<\/span> <span class=\"token number\">5<\/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 comment\">\/\/ \u8f93\u51fa 2<\/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>\u4f7f\u7528 typedef \u540e&#xff0c;\u4ee3\u7801\u66f4\u52a0\u7b80\u6d01\u6613\u8bfb[[13]][[14]]\u3002<\/p>\n<h3>3. \u56de\u8c03\u51fd\u6570<\/h3>\n<p>\u51fd\u6570\u6307\u9488\u6700\u5e38\u89c1\u7684\u5e94\u7528\u573a\u666f\u662f\u56de\u8c03\u51fd\u6570&#xff0c;\u5373\u5c06\u51fd\u6570\u6307\u9488\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9\u53e6\u4e00\u4e2a\u51fd\u6570&#xff0c;\u5728\u7279\u5b9a\u4e8b\u4ef6\u6216\u6761\u4ef6\u6ee1\u8db3\u65f6\u8c03\u7528\u3002<\/p>\n<h4>\u4ee3\u7801\u793a\u4f8b&#xff08;qsort \u56de\u8c03&#xff09;&#xff1a;<\/h4>\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;stdlib.h&gt;<\/span><\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u6bd4\u8f83\u51fd\u6570&#xff0c;\u7528\u4e8e qsort<\/span><br \/>\n<span class=\"token keyword\">int<\/span> <span class=\"token function\">compare<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> <span class=\"token keyword\">void<\/span><span class=\"token operator\">*<\/span> a<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">void<\/span><span class=\"token operator\">*<\/span> b<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token operator\">*<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span>a <span class=\"token operator\">&#8211;<\/span> <span class=\"token operator\">*<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span>b<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> <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\">5<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">9<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">1<\/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 punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> n <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><br \/>\n    <span class=\"token function\">qsort<\/span><span class=\"token punctuation\">(<\/span>arr<span class=\"token punctuation\">,<\/span> n<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> compare<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u5c06 compare \u4f5c\u4e3a\u56de\u8c03\u51fd\u6570\u4f20\u5165<\/span><\/p>\n<p>    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/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> i <span class=\"token operator\">&lt;<\/span> n<span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><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 &#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 keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d&#xff0c;compare \u51fd\u6570\u7684\u6307\u9488\u88ab\u4f20\u9012\u7ed9\u4e86 qsort&#xff0c;qsort \u4f1a\u5728\u5185\u90e8\u8c03\u7528 compare \u6765\u786e\u5b9a\u5143\u7d20\u7684\u987a\u5e8f[[15]][[16]]\u3002<\/p>\n<hr \/>\n<h2>\u56db\u3001\u603b\u7ed3<\/h2>\n<p>\u6307\u9488\u662f C 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