{"id":90667,"date":"2026-08-05T19:24:49","date_gmt":"2026-08-05T11:24:49","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/90667.html"},"modified":"2026-08-05T19:24:49","modified_gmt":"2026-08-05T11:24:49","slug":"c%e8%af%ad%e8%a8%80%e5%9f%ba%e7%a1%80%ef%bc%88%e5%85%ad%ef%bc%89%e6%95%b0%e7%bb%84%e7%9b%b8%e5%85%b3","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/90667.html","title":{"rendered":"C\u8bed\u8a00\u57fa\u7840\uff08\u516d\uff09\u6570\u7ec4\u76f8\u5173"},"content":{"rendered":"<h3>\u4e00\u3001\u4e3a\u4ec0\u4e48\u9700\u8981\u6570\u7ec4&#xff1f;<\/h3>\n<p>\u5728\u7f16\u7a0b\u4e2d&#xff0c;\u6211\u4eec\u7ecf\u5e38\u9700\u8981\u5904\u7406\u591a\u4e2a\u76f8\u540c\u7c7b\u578b\u7684\u6570\u636e\u3002\u6bd4\u5982\u5b58\u50a810\u4e2a\u5b66\u751f\u7684\u6210\u7ee9&#xff0c;\u5982\u679c\u4e0d\u7528\u6570\u7ec4&#xff0c;\u5c31\u5f97\u5b9a\u4e4910\u4e2a\u5355\u72ec\u7684\u53d8\u91cf&#xff08;score1, score2, \u2026&#xff09;&#xff0c;\u4e0d\u4ec5\u9ebb\u70e6&#xff0c;\u800c\u4e14\u65e0\u6cd5\u7528\u5faa\u73af\u7edf\u4e00\u5904\u7406\u3002\u6570\u7ec4\u6b63\u662f\u4e3a\u4e86\u89e3\u51b3\u8fd9\u7c7b\u95ee\u9898\u800c\u751f\u7684\u2014\u2014\u5b83\u80fd\u5728\u5185\u5b58\u4e2d\u8fde\u7eed\u5b58\u50a8\u591a\u4e2a\u76f8\u540c\u7c7b\u578b\u7684\u6570\u636e&#xff0c;\u5e76\u901a\u8fc7\u4e0b\u6807\u5feb\u901f\u8bbf\u95ee\u6bcf\u4e2a\u5143\u7d20\u3002<\/p>\n<hr \/>\n<h3>\u4e8c\u3001\u4e00\u7ef4\u6570\u7ec4\u57fa\u7840<\/h3>\n<h4>1. \u6570\u7ec4\u7684\u5b9a\u4e49<\/h4>\n<p>\u8bed\u6cd5\u683c\u5f0f&#xff1a;<\/p>\n<p>\u7c7b\u578b\u8bf4\u660e\u7b26 \u6570\u7ec4\u540d<span class=\"token punctuation\">[<\/span>\u5e38\u91cf\u8868\u8fbe\u5f0f<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p><span class=\"token keyword\">int<\/span> a<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\">\/\/ \u5b9a\u4e49\u4e00\u4e2a\u5305\u542b10\u4e2aint\u5143\u7d20\u7684\u6570\u7ec4<\/span><br \/>\n<span class=\"token keyword\">char<\/span> str<span class=\"token punctuation\">[<\/span><span class=\"token number\">32<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>     <span class=\"token comment\">\/\/ \u5b9a\u4e49\u5305\u542b32\u4e2achar\u5143\u7d20\u7684\u6570\u7ec4<\/span><br \/>\n<span class=\"token keyword\">float<\/span> array<span class=\"token punctuation\">[<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>   <span class=\"token comment\">\/\/ \u5b9a\u4e49\u5305\u542b5\u4e2afloat\u5143\u7d20\u7684\u6570\u7ec4<\/span><\/p>\n<ul>\n<li>\u7c7b\u578b\u8bf4\u660e\u7b26&#xff1a;\u53ef\u4ee5\u662f\u57fa\u672c\u6570\u636e\u7c7b\u578b&#xff08;int\u3001char\u3001float\u7b49&#xff09;&#xff0c;\u4e5f\u53ef\u4ee5\u662f\u6784\u9020\u7c7b\u578b&#xff0c;\u4f46\u4e0d\u80fd\u662fvoid\u3002<\/li>\n<li>\u6570\u7ec4\u540d&#xff1a;\u9075\u5faa\u6807\u8bc6\u7b26\u547d\u540d\u89c4\u5219&#xff08;\u5b57\u6bcd\u3001\u6570\u5b57\u3001\u4e0b\u5212\u7ebf&#xff0c;\u6570\u5b57\u4e0d\u80fd\u5f00\u5934&#xff09;\u3002<\/li>\n<li>\u5e38\u91cf\u8868\u8fbe\u5f0f&#xff1a;\u8868\u793a\u6570\u7ec4\u5143\u7d20\u4e2a\u6570&#xff0c;\u5fc5\u987b\u662f\u7f16\u8bd1\u65f6\u786e\u5b9a\u7684\u5e38\u91cf&#xff08;\u4e0d\u80fd\u662f\u53d8\u91cf&#xff09;\u3002<\/li>\n<\/ul>\n<h4>2. \u6570\u7ec4\u5143\u7d20\u7684\u8bbf\u95ee<\/h4>\n<p>\u901a\u8fc7 \u6570\u7ec4\u540d[\u4e0b\u6807] \u8bbf\u95ee\u5143\u7d20&#xff0c;\u4e0b\u6807\u4ece 0 \u5f00\u59cb&#xff0c;\u5230 \u5143\u7d20\u4e2a\u6570-1 \u7ed3\u675f\u3002<\/p>\n<p>a<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\">10<\/span><span class=\"token punctuation\">;<\/span>   <span class=\"token comment\">\/\/ \u7ed9\u7b2c\u4e00\u4e2a\u5143\u7d20\u8d4b\u503c<\/span><br \/>\na<span class=\"token punctuation\">[<\/span><span class=\"token number\">5<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">99<\/span><span class=\"token punctuation\">;<\/span>   <span class=\"token comment\">\/\/ \u7ed9\u7b2c\u516d\u4e2a\u5143\u7d20\u8d4b\u503c<\/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> a<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\u7b2c\u4e00\u4e2a\u5143\u7d20<\/span><\/p>\n<p>\u6ce8\u610f&#xff1a;\u4e0b\u6807\u53ef\u4ee5\u662f\u5e38\u91cf\u3001\u53d8\u91cf\u6216\u8868\u8fbe\u5f0f&#xff08;\u7ed3\u679c\u5fc5\u987b\u4e3a\u6574\u578b&#xff09;\u3002\u8bbf\u95ee\u65f6\u4e0d\u8981\u8d85\u51fa\u8303\u56f4&#xff0c;\u5426\u5219\u4f1a\u8d8a\u754c\u8bbf\u95ee&#xff0c;\u53ef\u80fd\u5bfc\u81f4\u7a0b\u5e8f\u5d29\u6e83\u6216\u6570\u636e\u9519\u4e71\u3002<\/p>\n<h4>3. \u6570\u7ec4\u7684\u521d\u59cb\u5316<\/h4>\n<p>\u521d\u59cb\u5316\u5373\u5728\u5b9a\u4e49\u65f6\u7ed9\u5143\u7d20\u8d4b\u521d\u503c\u3002<\/p>\n<ul>\n<li>\u5168\u90e8\u521d\u59cb\u5316&#xff1a;<\/li>\n<\/ul>\n<p><span class=\"token keyword\">int<\/span> a<span class=\"token punctuation\">[<\/span><span class=\"token number\">5<\/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 punctuation\">;<\/span><\/p>\n<ul>\n<li>\u5c40\u90e8\u521d\u59cb\u5316&#xff08;\u672a\u521d\u59cb\u5316\u7684\u5143\u7d20\u81ea\u52a8\u4e3a0&#xff09;&#xff1a;<\/li>\n<\/ul>\n<p><span class=\"token keyword\">int<\/span> a<span class=\"token punctuation\">[<\/span><span class=\"token number\">5<\/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 punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u524d\u4e09\u4e2a\u4e3a1,2,3&#xff0c;\u540e\u4e24\u4e2a\u4e3a0<\/span><\/p>\n<ul>\n<li>\u521d\u59cb\u5316\u51680&#xff1a;<\/li>\n<\/ul>\n<p><span class=\"token keyword\">int<\/span> a<span class=\"token punctuation\">[<\/span><span class=\"token number\">5<\/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 punctuation\">;<\/span>       <span class=\"token comment\">\/\/ \u6240\u6709\u5143\u7d20\u4e3a0<\/span><br \/>\n<span class=\"token keyword\">int<\/span> a<span class=\"token punctuation\">[<\/span><span class=\"token number\">5<\/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\">0<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<ul>\n<li>\u7701\u7565\u6570\u7ec4\u5927\u5c0f&#xff08;\u5fc5\u987b\u521d\u59cb\u5316&#xff09;&#xff1a;<\/li>\n<\/ul>\n<p><span class=\"token keyword\">int<\/span> a<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 punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u7f16\u8bd1\u5668\u81ea\u52a8\u786e\u5b9a\u5927\u5c0f\u4e3a5<\/span><\/p>\n<p>\u91cd\u8981&#xff1a;\u5982\u679c\u4e0d\u521d\u59cb\u5316&#xff0c;\u6570\u7ec4\u5143\u7d20\u7684\u503c\u662f\u968f\u673a\u7684&#xff08;\u5185\u5b58\u4e2d\u9057\u7559\u7684\u503c&#xff09;&#xff0c;\u6240\u4ee5\u5b9a\u4e49\u65f6\u5c3d\u91cf\u521d\u59cb\u5316&#xff0c;\u54ea\u6015\u53ea\u662f{0}\u3002<\/p>\n<h4>4. \u6570\u7ec4\u7684\u5b58\u50a8\u7279\u6027<\/h4>\n<ul>\n<li>\u5355\u4e00\u6027&#xff1a;\u6240\u6709\u5143\u7d20\u7c7b\u578b\u76f8\u540c\u3002<\/li>\n<li>\u6709\u5e8f\u6027&#xff1a;\u5143\u7d20\u6309\u4e0b\u6807\u4ece0\u5230N-1\u987a\u5e8f\u5b58\u50a8\u3002<\/li>\n<li>\u8fde\u7eed\u6027&#xff1a;\u6570\u7ec4\u5360\u7528\u4e00\u5757\u8fde\u7eed\u7684\u5185\u5b58\u7a7a\u95f4\u3002<\/li>\n<\/ul>\n<p>\u8fd9\u4e00\u70b9\u975e\u5e38\u91cd\u8981&#xff0c;\u56e0\u4e3a\u8fde\u7eed\u5b58\u50a8\u4f7f\u5f97\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u6307\u9488\u548c\u504f\u79fb\u91cf\u5feb\u901f\u8bbf\u95ee&#xff0c;\u4e5f\u662f\u6570\u7ec4\u6548\u7387\u9ad8\u7684\u539f\u56e0\u3002<\/p>\n<hr \/>\n<h3>\u4e09\u3001\u6570\u7ec4\u7684\u7ecf\u5178\u5e94\u7528&#xff1a;\u6392\u5e8f<\/h3>\n<p>\u6392\u5e8f\u662f\u6570\u7ec4\u7684\u5178\u578b\u5e94\u7528\u3002\u8fd9\u91cc\u4ee5\u9009\u62e9\u6392\u5e8f\u4e3a\u4f8b&#xff0c;\u638c\u63e1\u5176\u601d\u60f3\u3002<\/p>\n<p>\u9009\u62e9\u6392\u5e8f&#xff08;\u5347\u5e8f&#xff09;&#xff1a;\u6bcf\u6b21\u4ece\u5f85\u6392\u5e8f\u4f4d\u7f6e\u5f00\u59cb&#xff0c;\u5f80\u540e\u627e\u5230\u6700\u5c0f\u503c&#xff0c;\u653e\u5230\u5f53\u524d\u4f4d\u7f6e\u3002<\/p>\n<p><span class=\"token keyword\">int<\/span> a<span class=\"token punctuation\">[<\/span><span class=\"token number\">10<\/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 operator\">&#8211;<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token operator\">&#8211;<\/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 operator\">&#8211;<\/span><span class=\"token number\">9<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">int<\/span> len <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span>a<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">\/<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span>a<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\u5143\u7d20\u4e2a\u6570<\/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> len <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">1<\/span><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 keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> j <span class=\"token operator\">&#061;<\/span> i <span class=\"token operator\">&#043;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span> j <span class=\"token operator\">&lt;<\/span> len<span class=\"token punctuation\">;<\/span> j<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>a<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&gt;<\/span> a<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> <span class=\"token comment\">\/\/ \u5347\u5e8f&#xff1a;\u5982\u679c\u524d\u9762\u5927\u4e8e\u540e\u9762&#xff0c;\u4ea4\u6362<\/span><br \/>\n            <span class=\"token keyword\">int<\/span> tmp <span class=\"token operator\">&#061;<\/span> a<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            a<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> a<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n            a<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> tmp<span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u65f6\u95f4\u590d\u6742\u5ea6&#xff1a;O(n\u00b2)&#xff0c;\u7a7a\u95f4\u590d\u6742\u5ea6&#xff1a;O(1)\u3002\u9009\u62e9\u6392\u5e8f\u662f\u4e0d\u7a33\u5b9a\u7684&#xff08;\u76f8\u540c\u5143\u7d20\u76f8\u5bf9\u987a\u5e8f\u53ef\u80fd\u6539\u53d8&#xff09;\u3002<\/p>\n<hr \/>\n<h3>\u56db\u3001\u5b57\u7b26\u578b\u6570\u7ec4&#xff08;\u5b57\u7b26\u4e32&#xff09;<\/h3>\n<p>C\u8bed\u8a00\u6ca1\u6709\u4e13\u95e8\u7684\u5b57\u7b26\u4e32\u7c7b\u578b&#xff0c;\u800c\u662f\u7528\u5b57\u7b26\u6570\u7ec4\u6765\u5b58\u50a8\u5b57\u7b26\u4e32&#xff0c;\u5e76\u4ee5&#039;\\\\0&#039;&#xff08;ASCII\u78010&#xff09;\u4f5c\u4e3a\u7ed3\u675f\u6807\u5fd7\u3002<\/p>\n<h4>1. \u5b9a\u4e49\u4e0e\u521d\u59cb\u5316<\/h4>\n<p><span class=\"token keyword\">char<\/span> str<span class=\"token punctuation\">[<\/span><span class=\"token number\">32<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">char<\/span> str<span class=\"token punctuation\">[<\/span><span class=\"token number\">32<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token char\">&#039;h&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token char\">&#039;e&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token char\">&#039;l&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token char\">&#039;l&#039;<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token char\">&#039;o&#039;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>      <span class=\"token comment\">\/\/ \u4e0d\u63a8\u8350&#xff0c;\u672a\u521d\u59cb\u5316\u90e8\u5206\u4e3a0<\/span><br \/>\n<span class=\"token keyword\">char<\/span> str<span class=\"token punctuation\">[<\/span><span class=\"token number\">32<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;hello&#034;<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>                      <span class=\"token comment\">\/\/ \u63a8\u8350<\/span><br \/>\n<span class=\"token keyword\">char<\/span> str<span class=\"token punctuation\">[<\/span><span class=\"token number\">32<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;hello&#034;<\/span><span class=\"token punctuation\">;<\/span>                        <span class=\"token comment\">\/\/ \u6700\u5e38\u7528<\/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&#034;<\/span><span class=\"token punctuation\">;<\/span>                          <span class=\"token comment\">\/\/ \u81ea\u52a8\u786e\u5b9a\u5927\u5c0f\u4e3a6&#xff08;\u5305\u542b&#039;\\\\0&#039;&#xff09;<\/span><\/p>\n<p>\u6ce8\u610f&#xff1a;&#034;hello&#034;\u5b9e\u9645\u53606\u4e2a\u5b57\u8282&#xff08;5\u4e2a\u5b57\u7b26 &#043; 1\u4e2a&#039;\\\\0&#039;&#xff09;\u3002<\/p>\n<h4>2. \u8f93\u5165\u4e0e\u8f93\u51fa<\/h4>\n<ul>\n<li>\u8f93\u51fa&#xff1a;\u53ef\u4ee5\u4f7f\u7528printf(&#034;%s&#034;, str)\u6216puts(str)&#xff08;\u81ea\u52a8\u6362\u884c&#xff09;\u3002<\/li>\n<li>\u8f93\u5165&#xff1a;\u53ef\u4ee5\u4f7f\u7528scanf(&#034;%s&#034;, str)&#xff08;\u9047\u7a7a\u683c\u6216Tab\u505c\u6b62&#xff09;\u6216gets(str)&#xff08;\u9047\u6362\u884c\u505c\u6b62&#xff0c;\u4f46\u5371\u9669&#xff0c;\u53ef\u80fd\u8d8a\u754c&#xff09;\u3002<\/li>\n<\/ul>\n<p><span class=\"token keyword\">char<\/span> str<span class=\"token punctuation\">[<\/span><span class=\"token number\">100<\/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 punctuation\">;<\/span><br \/>\n<span class=\"token function\">scanf<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;%s&#034;<\/span><span class=\"token punctuation\">,<\/span> str<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u8f93\u5165 &#034;hello world&#034; \u53ea\u8bfb\u5165 &#034;hello&#034;<\/span><br \/>\n<span class=\"token function\">gets<\/span><span class=\"token punctuation\">(<\/span>str<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>         <span class=\"token comment\">\/\/ \u53ef\u8bfb\u5165\u5e26\u7a7a\u683c\u7684\u5b57\u7b26\u4e32&#xff0c;\u4f46\u5b58\u5728\u8d8a\u754c\u98ce\u9669<\/span><\/p>\n<h4>3. \u5e38\u7528\u5b57\u7b26\u4e32\u64cd\u4f5c\u51fd\u6570&#xff08;\u624b\u5199\u5b9e\u73b0&#xff09;<\/h4>\n<p>\u867d\u7136\u6807\u51c6\u5e93\u63d0\u4f9b\u4e86strlen\u3001strcpy\u3001strcat\u7b49&#xff0c;\u4f46\u7406\u89e3\u5176\u5e95\u5c42\u5b9e\u73b0\u81f3\u5173\u91cd\u8981\u3002<\/p>\n<p>\u2460 \u6c42\u5b57\u7b26\u4e32\u957f\u5ea6 (strlen)<br \/>\n\u7edf\u8ba1\u6709\u6548\u5b57\u7b26\u4e2a\u6570&#xff08;\u4e0d\u5305\u62ec&#039;\\\\0&#039;&#xff09;\u3002<\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">my_strlen<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">const<\/span> <span class=\"token keyword\">char<\/span> <span class=\"token operator\">*<\/span>s<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> len <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>s<span class=\"token punctuation\">[<\/span>len<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">!&#061;<\/span> <span class=\"token char\">&#039;\\\\0&#039;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        len<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> len<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u2461 \u5b57\u7b26\u4e32\u62f7\u8d1d (strcpy)<br \/>\n\u5c06\u6e90\u5b57\u7b26\u4e32\u590d\u5236\u5230\u76ee\u6807\u6570\u7ec4&#xff08;\u76ee\u6807\u6570\u7ec4\u7a7a\u95f4\u8981\u8db3\u591f&#xff09;\u3002<\/p>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token function\">my_strcpy<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">char<\/span> <span class=\"token operator\">*<\/span>dst<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">char<\/span> <span class=\"token operator\">*<\/span>src<span class=\"token punctuation\">)<\/span> <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\">while<\/span> <span class=\"token punctuation\">(<\/span>src<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">!&#061;<\/span> <span class=\"token char\">&#039;\\\\0&#039;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        dst<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> src<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/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 punctuation\">}<\/span><br \/>\n    dst<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token char\">&#039;\\\\0&#039;<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u522b\u5fd8\u4e86\u7ed3\u675f\u6807\u5fd7<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u2462 \u5b57\u7b26\u4e32\u62fc\u63a5 (strcat)<br \/>\n\u5c06\u6e90\u5b57\u7b26\u4e32\u8ffd\u52a0\u5230\u76ee\u6807\u5b57\u7b26\u4e32\u672b\u5c3e\u3002<\/p>\n<p><span class=\"token keyword\">void<\/span> <span class=\"token function\">my_strcat<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">char<\/span> <span class=\"token operator\">*<\/span>dst<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">char<\/span> <span class=\"token operator\">*<\/span>src<span class=\"token punctuation\">)<\/span> <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> j <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>dst<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">!&#061;<\/span> <span class=\"token char\">&#039;\\\\0&#039;<\/span><span class=\"token punctuation\">)<\/span> i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u627e\u5230dst\u7684\u672b\u5c3e<\/span><br \/>\n    <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>src<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">!&#061;<\/span> <span class=\"token char\">&#039;\\\\0&#039;<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        dst<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> src<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        i<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        j<span class=\"token operator\">&#043;&#043;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    dst<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token char\">&#039;\\\\0&#039;<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<hr \/>\n<h3>\u4e94\u3001\u4e8c\u7ef4\u6570\u7ec4<\/h3>\n<p>\u4e8c\u7ef4\u6570\u7ec4\u53ef\u4ee5\u7406\u89e3\u4e3a\u201c\u6570\u7ec4\u7684\u6570\u7ec4\u201d&#xff0c;\u5e38\u7528\u4e8e\u5b58\u50a8\u77e9\u9635\u6216\u8868\u683c\u6570\u636e\u3002<\/p>\n<h4>1. \u5b9a\u4e49\u4e0e\u8bbf\u95ee<\/h4>\n<p><span class=\"token keyword\">int<\/span> a<span class=\"token punctuation\">[<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ 3\u884c4\u5217&#xff0c;\u517112\u4e2a\u5143\u7d20<\/span><\/p>\n<p>\u8bbf\u95ee\u65b9\u5f0f&#xff1a;a[\u884c\u4e0b\u6807][\u5217\u4e0b\u6807]&#xff0c;\u884c\u4e0b\u6807\u8303\u56f40<sub>2&#xff0c;\u5217\u4e0b\u68070<\/sub>3\u3002<\/p>\n<h4>2. \u521d\u59cb\u5316<\/h4>\n<ul>\n<li>\u5168\u90e8\u521d\u59cb\u5316&#xff08;\u5206\u884c\u6216\u4e0d\u5206\u884c&#xff09;&#xff1a;<\/li>\n<\/ul>\n<p><span class=\"token keyword\">int<\/span> a<span class=\"token punctuation\">[<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/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 punctuation\">,<\/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 punctuation\">,<\/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 number\">11<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">12<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token keyword\">int<\/span> a<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/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 punctuation\">,<\/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 punctuation\">,<\/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 number\">11<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">12<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u53ef\u7701\u7565\u884c\u6570<\/span><br \/>\n<span class=\"token keyword\">int<\/span> a<span class=\"token punctuation\">[<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">4<\/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 number\">11<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">12<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>        <span class=\"token comment\">\/\/ \u81ea\u52a8\u6309\u884c\u586b\u5145<\/span><\/p>\n<ul>\n<li>\u5c40\u90e8\u521d\u59cb\u5316&#xff08;\u672a\u521d\u59cb\u5316\u7684\u88650&#xff09;&#xff1a;<\/li>\n<\/ul>\n<p><span class=\"token keyword\">int<\/span> a<span class=\"token punctuation\">[<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">4<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/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 punctuation\">,<\/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 punctuation\">,<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token number\">6<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token comment\">\/\/ \u7b2c\u4e00\u884c&#xff1a;1,2,0,0&#xff1b;\u7b2c\u4e8c\u884c&#xff1a;3,4,5,0&#xff1b;\u7b2c\u4e09\u884c&#xff1a;6,0,0,0<\/span><\/p>\n<p>\u6ce8\u610f&#xff1a;\u5728\u521d\u59cb\u5316\u65f6&#xff0c;\u884c\u6570\u53ef\u4ee5\u7701\u7565&#xff0c;\u4f46\u5217\u6570\u4e0d\u80fd\u7701\u7565\u3002<\/p>\n<h4>3. \u4e8c\u7ef4\u5b57\u7b26\u578b\u6570\u7ec4<\/h4>\n<p>\u7528\u4e8e\u5b58\u50a8\u591a\u4e2a\u5b57\u7b26\u4e32&#xff08;\u5982\u5b66\u751f\u540d\u5355&#xff09;\u3002<\/p>\n<p><span class=\"token keyword\">char<\/span> str<span class=\"token punctuation\">[<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">100<\/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 punctuation\">;<\/span>                 <span class=\"token comment\">\/\/ 3\u4e2a\u5b57\u7b26\u4e32&#xff0c;\u6bcf\u4e2a\u6700\u957f99\u5b57\u7b26<\/span><br \/>\n<span class=\"token keyword\">char<\/span> str<span class=\"token punctuation\">[<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">100<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token string\">&#034;hello&#034;<\/span><span class=\"token punctuation\">,<\/span> 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