{"id":90213,"date":"2026-08-04T20:08:43","date_gmt":"2026-08-04T12:08:43","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/90213.html"},"modified":"2026-08-04T20:08:43","modified_gmt":"2026-08-04T12:08:43","slug":"c%e8%af%ad%e8%a8%80-%e6%b7%b1%e5%ba%a6%e7%90%86%e8%a7%a3%e6%8c%87%e9%92%88%ef%bc%885%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/90213.html","title":{"rendered":"C\u8bed\u8a00\u2014\u2014\u6df1\u5ea6\u7406\u89e3\u6307\u9488\uff085\uff09"},"content":{"rendered":"

1. \u56de\u8c03\u51fd\u6570\u662f\u4ec0\u4e48？<\/h2>\n

\u56de\u8c03\u51fd\u6570\u5c31\u662f\u2f00\u4e2a\u901a\u8fc7\u51fd\u6570\u6307\u9488\u8c03\u2f64\u7684\u51fd\u6570\u3002
\n\u5982\u679c\u4f60\u628a\u51fd\u6570\u7684\u6307\u9488（\u5730\u5740）\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9\u53e6\u2f00\u4e2a\u51fd\u6570，\u5f53\u8fd9\u4e2a\u6307\u9488\u88ab\u2f64\u6765\u8c03\u2f64\u5176\u6240\u6307\u5411\u7684\u51fd\u6570\u65f6，\u88ab\u8c03\u2f64\u7684\u51fd\u6570\u5c31\u662f\u56de\u8c03\u51fd\u6570\u3002\u56de\u8c03\u51fd\u6570\u4e0d\u662f\u7531\u8be5\u51fd\u6570\u7684\u5b9e\u73b0\u2f45\u76f4\u63a5\u8c03\u2f64，\u2f7d\u662f\u5728\u7279\u5b9a\u7684\u4e8b\u4ef6\u6216\u6761\u4ef6\u53d1\u2f63\u65f6\u7531\u53e6\u5916\u7684\u2f00\u2f45\u8c03\u2f64\u7684，\u2f64\u4e8e\u5bf9\u8be5\u4e8b\u4ef6\u6216\u6761\u4ef6\u8fdb\u2f8f\u54cd\u5e94.\u3002<\/p>\n

\u4e0b\u9762\u6211\u4eec\u7528\u4ee3\u7801\u5b9e\u73b0\u4e00\u4e2a\u52a0\u6cd5\u8fd0\u7b97：<\/p>\n

int<\/span> add<\/span>(<\/span>int<\/span> a,<\/span> int<\/span> b)<\/span>\/\/\u52a0\u6cd5\u8fd0\u7b97<\/span>
\n{<\/span>
\nreturn<\/span> a +<\/span> b;<\/span>
\n}<\/span><\/p>\n

void<\/span> calc<\/span>(<\/span>int<\/span>(<\/span>*<\/span>pf)<\/span>(<\/span>int<\/span>,<\/span> int<\/span>)<\/span>)<\/span>\/\/\u7528calc\u8c03\u7528add\u51fd\u6570<\/span>
\n{<\/span>
\nint<\/span> ret =<\/span> 0<\/span>;<\/span>
\nint<\/span> x,<\/span> y;<\/span>
\nscanf_s<\/span>(<\/span>"%d %d"<\/span>,<\/span> &<\/span>x,<\/span> &<\/span>y)<\/span>;<\/span>
\nret =<\/span> pf<\/span>(<\/span>x,<\/span> y)<\/span>;<\/span>
\nprintf<\/span>(<\/span>"%d\\\\n"<\/span>,<\/span> ret)<\/span>;<\/span>
\n}<\/span><\/p>\n

int<\/span> main<\/span>(<\/span>)<\/span>
\n{<\/span>
\ncalc<\/span>(<\/span>add)<\/span>;<\/span>
\nreturn<\/span> 0<\/span>;<\/span>
\n}<\/span><\/p>\n

\u4e0a\u9762\u4ee3\u7801\u4e2d，\u6211\u4eec\u6ca1\u6709\u76f4\u95f4\u4f7f\u7528add\u51fd\u6570，\u800c\u662f\u628aadd\u7684\u6307\u9488\u7ed9\u4e86calc\u51fd\u6570，\u95f4\u63a5\u7684\u8c03\u7528\u4e86add\u51fd\u6570\u3002\u8fd9\u5c31\u662f\u56de\u8c03\u51fd\u6570\u3002<\/p>\n

2. qsort \u4f7f\u2f64\u4e3e\u4f8b<\/h2>\n

2.1 \u4f7f\u2f64qsort\u51fd\u6570\u6392\u5e8f\u6574\u578b\u6570\u636e<\/h3>\n

\u9996\u5148\u6211\u4eec\u5148\u6765\u8ba4\u8bc6\u4e00\u4e0b\u4ec0\u4e48\u662fqsort\u51fd\u6570：qsort \u662f C \u6807\u51c6\u5e93\u4e2d\u63d0\u4f9b\u7684\u5feb\u901f\u6392\u5e8f\u51fd\u6570，\u7528\u4e8e\u5bf9\u6570\u7ec4\u8fdb\u884c\u6392\u5e8f\u3002\u5b83\u80fd\u591f\u5bf9\u4efb\u610f\u7c7b\u578b\u7684\u6570\u636e\u8fdb\u884c\u6392\u5e8f，\u901a\u8fc7\u7528\u6237\u81ea\u5b9a\u4e49\u7684\u6bd4\u8f83\u51fd\u6570\u5b9e\u73b0\u7075\u6d3b\u7684\u6392\u5e8f\u89c4\u5219\u3002
\nqsort\u51fd\u6570\u7684\u5934\u6587\u4ef6stdlib
\nqsort\u51fd\u6570，\u9700\u8981\u63d0\u4f9b\u56db\u4e2a\u6570\u636e：<\/p>\n

void<\/span> qsort<\/span>(<\/span>
\n void<\/span> *<\/span>base,<\/span> \/\/ \u6570\u7ec4\u9996\u5143\u7d20\u5730\u5740<\/span>
\n size_t<\/span> nmemb,<\/span> \/\/ \u6570\u7ec4\u5143\u7d20\u4e2a\u6570<\/span>
\n size_t<\/span> size,<\/span> \/\/ \u6bcf\u4e2a\u5143\u7d20\u7684\u5927\u5c0f（\u5b57\u8282）<\/span>
\n int<\/span> (<\/span>*<\/span>compar)<\/span>(<\/span>const<\/span> void<\/span> *<\/span>,<\/span> const<\/span> void<\/span> *<\/span>)<\/span> \/\/ \u6bd4\u8f83\u51fd\u6570\u7684\u6307\u9488<\/span>
\n)<\/span>;<\/span><\/p>\n

\u7528qsort\u51fd\u6570\u8fdb\u884c\u5347\u5e8f\u8fd0\u7b97
\n1\u3001\u6392\u5e8f\u5bf9\u8c61\u662fint\u65f6<\/p>\n

#<\/span>include<\/span> <stdio.h><\/span><\/span>
\n#<\/span>include<\/span> <stdlib.h><\/span>\/\/qsort\u51fd\u6570\u7684\u5934\u6587\u4ef6<\/span><\/span>
\n\/\/qosrt\u51fd\u6570\u7684\u4f7f\u2f64\u8005\u5f97\u5b9e\u73b0\u2f00\u4e2a\u2f50\u8f83\u51fd\u6570<\/span>
\nint<\/span> int_cmp<\/span>(<\/span>const<\/span> void<\/span>*<\/span> p1,<\/span> const<\/span> void<\/span>*<\/span> p2)<\/span>
\n{<\/span>
\nreturn<\/span> (<\/span>*<\/span>(<\/span>int<\/span>*<\/span>)<\/span>p1 –<\/span> *<\/span>(<\/span>int<\/span>*<\/span>)<\/span>p2)<\/span>;<\/span>
\n\/\/\u56e0\u4e3ap1\u548cp2\u539f\u5148\u5b9a\u4e49\u7684\u65f6\u5019\u662fvoid*，\u6240\u4ee5\u4e0d\u53ef\u4ee5\u76f4\u63a5\u89e3\u5f15\u7528，\u56e0\u4e3a\u6570\u7ec4\u4e2d\u5143\u7d20\u7c7b\u578b\u662fint，\u6240\u4ee5\u8981\u5148\u5f3a\u5236\u8f6c\u5316\u6210int*\u540e\u5728\u89e3\u5f15\u7528<\/span>
\n}<\/span>
\nint<\/span> main<\/span>(<\/span>)<\/span>
\n{<\/span>
\nint<\/span> arr[<\/span>]<\/span> =<\/span> {<\/span> 1<\/span>,<\/span> 3<\/span>,<\/span> 5<\/span>,<\/span> 7<\/span>,<\/span> 9<\/span>,<\/span> 2<\/span>,<\/span> 4<\/span>,<\/span> 6<\/span>,<\/span> 8<\/span>,<\/span> 0<\/span> }<\/span>;<\/span>
\nint<\/span> i =<\/span> 0<\/span>;<\/span>
\nqsort<\/span>(<\/span>arr,<\/span> sizeof<\/span>(<\/span>arr)<\/span> \/<\/span> sizeof<\/span>(<\/span>arr[<\/span>0<\/span>]<\/span>)<\/span>,<\/span> sizeof<\/span>(<\/span>int<\/span>)<\/span>,<\/span> int_cmp)<\/span>;<\/span>\/\/\u4f7f\u7528\u65b9\u6cd5：\u9996\u5143\u7d20\u5730\u5740，\u6570\u7ec4\u5143\u7d20\u4e2a\u6570，\u5143\u7d20\u7684\u5927\u5c0f（\u5b57\u8282），\u6bd4\u8f83\u51fd\u6570\u7684\u6307\u9488<\/span>
\nfor<\/span> (<\/span>i =<\/span> 0<\/span>;<\/span> i <<\/span> sizeof<\/span>(<\/span>arr)<\/span> \/<\/span> sizeof<\/span>(<\/span>arr[<\/span>0<\/span>]<\/span>)<\/span>;<\/span> i++<\/span>)<\/span>
\n{<\/span>
\nprintf<\/span>(<\/span>"%d "<\/span>,<\/span> arr[<\/span>i]<\/span>)<\/span>;<\/span>
\n}<\/span>
\nprintf<\/span>(<\/span>"\\\\n"<\/span>)<\/span>;<\/span>
\nreturn<\/span> 0<\/span>;<\/span>
\n}<\/span><\/p>\n

const void* p1: \u6307\u5411\u6570\u7ec4\u4e2d\u7b2c\u4e00\u4e2a\u5f85\u6bd4\u8f83\u5143\u7d20\u7684\u6307\u9488\u3002
\nconst void* p2: \u6307\u5411\u6570\u7ec4\u4e2d\u7b2c\u4e8c\u4e2a\u5f85\u6bd4\u8f83\u5143\u7d20\u7684\u6307\u9488\u3002<\/p>\n

\u6bd4\u8f83\u51fd\u6570\u9700\u8fd4\u56de\u6574\u6570（\u4e5f\u5c31\u662fp1\u6307\u5411\u7684\u503c-p2\u6307\u5411\u7684\u503c）：
\n\u8d1f\u6570：\u7b2c\u4e00\u4e2a\u53c2\u6570\u5e94\u6392\u5728\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4e4b\u524d\u3002
\n0：\u4e24\u53c2\u6570\u76f8\u7b49\u3002
\n\u6b63\u6570：\u7b2c\u4e00\u4e2a\u53c2\u6570\u5e94\u6392\u5728\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4e4b\u540e<\/p>\n

2\u3001\u6392\u5e8f\u5bf9\u8c61\u662fchar\u7c7b\u578b\u65f6<\/p>\n

#<\/span>include<\/span> <stdio.h><\/span> \/\/ \u7528\u4e8e\u8f93\u5165\u8f93\u51fa<\/span><\/span>
\n#<\/span>include<\/span> <stdlib.h><\/span> \/\/ \u7528\u4e8eqsort\u51fd\u6570<\/span><\/span>
\n\/\/ \u6bd4\u8f83\u51fd\u6570，\u7528\u4e8e\u6bd4\u8f83\u4e24\u4e2a\u5b57\u7b26\u7684\u5927\u5c0f<\/span>
\nint<\/span> compare_chars<\/span>(<\/span>const<\/span> void<\/span>*<\/span> a,<\/span> const<\/span> void<\/span>*<\/span> b)<\/span> {<\/span>
\n char<\/span> char_a =<\/span> *<\/span>(<\/span>const<\/span> char<\/span>*<\/span>)<\/span>a;<\/span>
\n char<\/span> char_b =<\/span> *<\/span>(<\/span>const<\/span> char<\/span>*<\/span>)<\/span>b;<\/span>
\n return<\/span> char_a –<\/span> char_b;<\/span>
\n}<\/span>
\nint<\/span> main<\/span>(<\/span>)<\/span>
\n{<\/span>
\n char<\/span> arr[<\/span>]<\/span> =<\/span> {<\/span> 'd'<\/span>,<\/span> 'a'<\/span>,<\/span> 'c'<\/span>,<\/span> 'b'<\/span>,<\/span> 'e'<\/span> }<\/span>;<\/span>
\n int<\/span> size =<\/span> sizeof<\/span>(<\/span>arr)<\/span> \/<\/span> sizeof<\/span>(<\/span>arr[<\/span>0<\/span>]<\/span>)<\/span>;<\/span>
\n qsort<\/span>(<\/span>arr,<\/span> size,<\/span> sizeof<\/span>(<\/span>char<\/span>)<\/span>,<\/span> compare_chars)<\/span>;<\/span>\/\/ \u4f7f\u7528 qsort \u5bf9\u5b57\u7b26\u6570\u7ec4\u8fdb\u884c\u6392\u5e8f<\/span>
\n for<\/span> (<\/span>int<\/span> i =<\/span> 0<\/span>;<\/span> i <<\/span> size;<\/span> i++<\/span>)<\/span> \/\/ \u6253\u5370\u6392\u5e8f\u540e\u7684\u5b57\u7b26\u6570\u7ec4<\/span>
\n {<\/span>
\n printf<\/span>(<\/span>"%c "<\/span>,<\/span> arr[<\/span>i]<\/span>)<\/span>;<\/span>
\n }<\/span>
\n return<\/span> 0<\/span>;<\/span>
\n}<\/span><\/p>\n

3\u3001\u6392\u5e8f\u5bf9\u8c61\u662f\u5b57\u7b26\u4e32\u7c7b\u578b\u65f6<\/p>\n

#<\/span>include<\/span> <stdio.h><\/span> \/\/ \u7528\u4e8e\u8f93\u5165\u8f93\u51fa<\/span><\/span>
\n#<\/span>include<\/span> <stdlib.h><\/span> \/\/ \u7528\u4e8eqsort\u51fd\u6570<\/span><\/span>
\n#<\/span>include<\/span> <string.h><\/span> \/\/ \u7528\u4e8estrcmp\u51fd\u6570<\/span><\/span>
\nint<\/span> compareStrings<\/span>(<\/span>const<\/span> void<\/span>*<\/span> p1,<\/span> const<\/span> void<\/span>*<\/span> p2)<\/span> {<\/span>
\n \/\/ \u5c06void\u6307\u9488\u8f6c\u6362\u4e3a\u6307\u5411\u5b57\u7b26\u4e32\u6307\u9488\u7684\u6307\u9488<\/span>
\n char<\/span> str1[<\/span>]<\/span> =<\/span> "* (char*)p1"<\/span>;<\/span>
\n char<\/span> str2[<\/span>]<\/span> =<\/span> "* (char*)p2"<\/span>;<\/span>
\n return<\/span> strcmp<\/span>(<\/span>str1,<\/span> str2)<\/span>;<\/span>\/\/ \u4f7f\u7528strcmp\u6bd4\u8f83\u5b57\u7b26\u4e32<\/span>
\n}<\/span>
\nint<\/span> main<\/span>(<\/span>)<\/span>
\n{<\/span>
\n char<\/span>*<\/span> strings[<\/span>]<\/span> =<\/span> {<\/span>"banana"<\/span>,<\/span>"apple"<\/span>,<\/span>"orange"<\/span>,<\/span>"grape"<\/span>,<\/span>"pear"<\/span>}<\/span>;<\/span>\/\/ \u5b9a\u4e49\u4e00\u4e2a\u5b57\u7b26\u4e32\u6570\u7ec4<\/span>
\n int<\/span> numStrings =<\/span> sizeof<\/span>(<\/span>strings)<\/span> \/<\/span> sizeof<\/span>(<\/span>strings[<\/span>0<\/span>]<\/span>)<\/span>;<\/span>
\n qsort<\/span>(<\/span>strings,<\/span> numStrings,<\/span> sizeof<\/span>(<\/span>char<\/span>*<\/span>)<\/span>,<\/span> compareStrings)<\/span>;<\/span>\/\/ \u4f7f\u7528qsort\u5bf9\u5b57\u7b26\u4e32\u6570\u7ec4\u8fdb\u884c\u6392\u5e8f<\/span>
\n for<\/span> (<\/span>int<\/span> i =<\/span> 0<\/span>;<\/span> i <<\/span> numStrings;<\/span> i++<\/span>)<\/span>
\n {<\/span>
\n printf<\/span>(<\/span>"%s\\\\n"<\/span>,<\/span> strings[<\/span>i]<\/span>)<\/span>;<\/span>\/\/ \u6253\u5370\u6392\u5e8f\u540e\u7684\u7ed3\u679c<\/span>
\n }<\/span>
\n return<\/span> 0<\/span>;<\/span>
\n}<\/span><\/p>\n

\u6ce8\u610f\u5b57\u7b26\u4e32\u6bd4\u8f83\u8981\u7528：strcmp\u51fd\u6570<\/p>\n

4\u3001\u6392\u5e8f\u5bf9\u8c61\u662f\u6d6e\u70b9\u578b\u7c7b\u578b\u65f6<\/p>\n

#<\/span>include<\/span> <stdio.h><\/span><\/span>
\n#<\/span>include<\/span> <stdlib.h><\/span><\/span>
\nint<\/span> compare_floats<\/span>(<\/span>const<\/span> void<\/span> *<\/span>a,<\/span> const<\/span> void<\/span> *<\/span>b)<\/span> \/\/ \u6d6e\u70b9\u6570\u6bd4\u8f83\u51fd\u6570<\/span>
\n{<\/span>
\n float<\/span> fa =<\/span> *<\/span>(<\/span>const<\/span> float<\/span>*<\/span>)<\/span>a;<\/span>
\n float<\/span> fb =<\/span> *<\/span>(<\/span>const<\/span> float<\/span>*<\/span>)<\/span>b;<\/span>
\n \/\/ \u5904\u7406\u6d6e\u70b9\u6570\u7cbe\u5ea6\u95ee\u9898<\/span>
\n if<\/span> (<\/span>fa <<\/span> fb)<\/span>
\n {<\/span>
\n return<\/span> –<\/span>1<\/span>;<\/span>
\n }<\/span>
\n if<\/span> (<\/span>fa ><\/span> fb)<\/span>
\n {<\/span>
\n return<\/span> 1<\/span>;<\/span>
\n }<\/span>
\n return<\/span> 0<\/span>;<\/span>
\n}<\/span>
\nint<\/span> main<\/span>(<\/span>)<\/span> {<\/span>
\n float<\/span> numbers[<\/span>]<\/span> =<\/span> {<\/span>3.14f<\/span>,<\/span> 1.59f<\/span>,<\/span> 2.65f<\/span>,<\/span> 3.58f<\/span>,<\/span> 9.79f<\/span>,<\/span> 3.23f<\/span>}<\/span>;<\/span>
\n int<\/span> size =<\/span> sizeof<\/span>(<\/span>numbers)<\/span> \/<\/span> sizeof<\/span>(<\/span>numbers[<\/span>0<\/span>]<\/span>)<\/span>;<\/span>
\n \/\/ \u4f7f\u7528qsort\u6392\u5e8f<\/span>
\n qsort<\/span>(<\/span>numbers,<\/span> size,<\/span> sizeof<\/span>(<\/span>float<\/span>)<\/span>,<\/span> compare_floats)<\/span>;<\/span>
\n \/\/ \u6253\u5370\u6392\u5e8f\u7ed3\u679c<\/span>
\n for<\/span> (<\/span>int<\/span> i =<\/span> 0<\/span>;<\/span> i <<\/span> size;<\/span> i++<\/span>)<\/span>
\n {<\/span>
\n printf<\/span>(<\/span>"%.2f "<\/span>,<\/span> numbers[<\/span>i]<\/span>)<\/span>;<\/span>
\n }<\/span>
\n return<\/span> 0<\/span>;<\/span>
\n}<\/span><\/p>\n

2.2 \u4f7f\u2f64qsort\u6392\u5e8f\u7ed3\u6784\u6570\u636e<\/h3>\n

\u6392\u5e8f\u5bf9\u8c61\u662f\u7ed3\u6784\u4f53\u51fd\u6570<\/p>\n

#<\/span>include<\/span> <stdio.h><\/span> \/\/ \u7528\u4e8e\u8f93\u5165\u8f93\u51fa<\/span><\/span>
\n#<\/span>include<\/span> <stdlib.h><\/span> \/\/ \u7528\u4e8eqsort\u51fd\u6570<\/span><\/span>
\n#<\/span>include<\/span> <string.h><\/span> \/\/ \u7528\u4e8estrcmp\u51fd\u6570<\/span><\/span>
\nstruct<\/span> Stu<\/span> \/\/\u5b9a\u4e49\u4e00\u4e2a\u5d4c\u5957\u51fd\u6570<\/span>
\n{<\/span>
\nchar<\/span> name[<\/span>20<\/span>]<\/span>;<\/span>\/\/\u540d\u5b57<\/span>
\nint<\/span> age;<\/span>\/\/\u5e74\u9f84<\/span>
\n}<\/span>;<\/span>
\n\/\/\u6bd4\u8f83\u51fd\u6570：\u5047\u8bbe\u6309\u7167\u5e74\u9f84\u6765\u2f50\u8f83<\/span>
\nint<\/span> cmp_stu_by_age<\/span>(<\/span>const<\/span> void<\/span>*<\/span> e1,<\/span> const<\/span> void<\/span>*<\/span> e2)<\/span>
\n{<\/span>
\nreturn<\/span> (<\/span>(<\/span>struct<\/span> Stu<\/span>*<\/span>)<\/span>e1)<\/span>-><\/span>age –<\/span> (<\/span>(<\/span>struct<\/span> Stu<\/span>*<\/span>)<\/span>e2)<\/span>-><\/span>age;<\/span>
\n}<\/span><\/p>\n

\/\/strcmp – \u662f\u5e93\u51fd\u6570，\u662f\u4e13\u2ed4\u2f64\u6765\u2f50\u8f83\u4e24\u4e2a\u5b57\u7b26\u4e32\u7684\u2f24\u2f29\u7684<\/span>
\n\/\/\u6bd4\u8f83\u51fd\u6570：\u5047\u8bbe\u6309\u7167\u540d\u5b57\u6765\u2f50\u8f83<\/span>
\nint<\/span> cmp_stu_by_name<\/span>(<\/span>const<\/span> void<\/span>*<\/span> e1,<\/span> const<\/span> void<\/span>*<\/span> e2)<\/span>
\n{<\/span>
\nreturn<\/span> strcmp<\/span>(<\/span> (<\/span>(<\/span>struct<\/span> Stu<\/span>*<\/span>)<\/span>e1)<\/span>-><\/span>name ,<\/span> (<\/span>(<\/span>struct<\/span> Stu<\/span>*<\/span>)<\/span>e2)<\/span>-><\/span>name )<\/span>;<\/span>
\n}<\/span><\/p>\n

\/\/\u6309\u7167\u5e74\u9f84\u6765\u6392\u5e8f<\/span>
\nvoid<\/span> test2<\/span>(<\/span>)<\/span>
\n{<\/span>
\nstruct<\/span> Stu<\/span> s[<\/span>]<\/span> =<\/span> {<\/span> {<\/span>"zhangsan"<\/span>,<\/span> 20<\/span>}<\/span>,<\/span> {<\/span>"lisi"<\/span>,<\/span> 30<\/span>}<\/span>,<\/span> {<\/span>"wangwu"<\/span>,<\/span> 15<\/span>}<\/span> }<\/span>;<\/span>
\nint<\/span> sz =<\/span> sizeof<\/span>(<\/span>s)<\/span> \/<\/span> sizeof<\/span>(<\/span>s[<\/span>0<\/span>]<\/span>)<\/span>;<\/span>
\nqsort<\/span>(<\/span>s,<\/span> sz,<\/span> sizeof<\/span>(<\/span>s[<\/span>0<\/span>]<\/span>)<\/span>,<\/span> cmp_stu_by_age)<\/span>;<\/span>
\n}<\/span><\/p>\n

\/\/\u6309\u7167\u540d\u5b57\u6765\u6392\u5e8f<\/span>
\nvoid<\/span> test3<\/span>(<\/span>)<\/span>
\n{<\/span>
\nstruct<\/span> Stu<\/span> s[<\/span>]<\/span> =<\/span> {<\/span> {<\/span>"zhangsan"<\/span>,<\/span> 20<\/span>}<\/span>,<\/span> {<\/span>"lisi"<\/span>,<\/span> 30<\/span>}<\/span>,<\/span> {<\/span>"wangwu"<\/span>,<\/span> 15<\/span>}<\/span> }<\/span>;<\/span>
\nint<\/span> sz =<\/span> (<\/span>sizeof<\/span>(<\/span>s)<\/span> \/<\/span> sizeof<\/span>(<\/span>s[<\/span>0<\/span>]<\/span>)<\/span>)<\/span>;<\/span>
\nqsort<\/span>(<\/span>s,<\/span> sz,<\/span> sizeof<\/span>(<\/span>s[<\/span>0<\/span>]<\/span>)<\/span>,<\/span> cmp_stu_by_name)<\/span>;<\/span>
\n}<\/span><\/p>\n

int<\/span> main<\/span>(<\/span>)<\/span>
\n{<\/span>
\ntest2<\/span>(<\/span>)<\/span>;<\/span>\/\/\u6309\u7167\u5e74\u9f84\u6765\u6392\u5e8f<\/span>
\ntest3<\/span>(<\/span>)<\/span>;<\/span>\/\/\u6309\u7167\u540d\u5b57\u6765\u6392\u5e8f<\/span>
\nreturn<\/span> 0<\/span>;<\/span>
\n}<\/span><\/p>\n

\u8865\u5145：\u7ed3\u6784\u4f53\u6210\u5458\u8bbf\u95ee\u64cd\u4f5c\u7b26 -> （\u901a\u8fc7\u6307\u9488\u95f4\u63a5\u8bbf\u95ee\u7ed3\u6784\u4f53\u53d8\u91cf\u7684\u6210\u5458）<\/p>\n

struct<\/span> Stu<\/span> \/\/\u5b9a\u4e49\u4e00\u4e2a\u5d4c\u5957\u51fd\u6570<\/span>
\n{<\/span>
\nchar<\/span> name[<\/span>20<\/span>]<\/span>;<\/span>\/\/\u540d\u5b57<\/span>
\nint<\/span> age;<\/span>\/\/\u5e74\u9f84<\/span>
\n}<\/span>;<\/span>
\nint<\/span> main<\/span>(<\/span>)<\/span>
\n{<\/span>
\nstruct<\/span> Stu<\/span> s =<\/span> {<\/span> "zhangsan"<\/span>,<\/span> 20<\/span> }<\/span>;<\/span>
\nstruct<\/span> Stu<\/span>*<\/span> x =<\/span> &<\/span>s;<\/span>
\nprintf<\/span>(<\/span>"%d\\\\n"<\/span>,<\/span> x-><\/span>age)<\/span>;<\/span>
\nreturn<\/span> 0<\/span>;<\/span>
\n}<\/span><\/p>\n

\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

. \u64cd\u4f5c\u7b26\u7528\u4e8e\u76f4\u63a5\u8bbf\u95ee\u7ed3\u6784\u4f53\u53d8\u91cf\u7684\u6210\u5458<\/p>\n

struct<\/span> Stu<\/span> \/\/\u5b9a\u4e49\u4e00\u4e2a\u5d4c\u5957\u51fd\u6570<\/span>
\n{<\/span>
\nchar<\/span> name[<\/span>20<\/span>]<\/span>;<\/span>\/\/\u540d\u5b57<\/span>
\nint<\/span> age;<\/span>\/\/\u5e74\u9f84<\/span>
\n}<\/span>;<\/span>
\nint<\/span> main<\/span>(<\/span>)<\/span>
\n{<\/span>
\nstruct<\/span> Stu<\/span> s[<\/span>]<\/span>=<\/span> {<\/span>"zhangsan"<\/span>,<\/span> 20<\/span>}<\/span>;<\/span>
\nprintf<\/span>(<\/span>"%d\\\\n"<\/span>,<\/span> s.<\/span>age)<\/span>;<\/span>
\nreturn<\/span> 0<\/span>;<\/span>
\n}<\/span><\/p>\n

\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n","protected":false},"excerpt":{"rendered":"

1. \u56de\u8c03\u51fd\u6570\u662f\u4ec0\u4e48？
\n\u56de\u8c03\u51fd\u6570\u5c31\u662f\u2f00\u4e2a\u901a\u8fc7\u51fd\u6570\u6307\u9488\u8c03\u2f64\u7684\u51fd\u6570\u3002
\n\u5982\u679c\u4f60\u628a\u51fd\u6570\u7684\u6307\u9488（\u5730\u5740）\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9\u53e6\u2f00\u4e2a\u51fd\u6570，\u5f53\u8fd9\u4e2a\u6307\u9488\u88ab\u2f64\u6765\u8c03\u2f64\u5176\u6240\u6307\u5411\u7684\u51fd\u6570\u65f6，\u88ab\u8c03\u2f64\u7684\u51fd\u6570\u5c31\u662f\u56de\u8c03\u51fd\u6570\u3002\u56de\u8c03\u51fd\u6570\u4e0d\u662f\u7531\u8be5\u51fd\u6570\u7684\u5b9e\u73b0\u2f45\u76f4\u63a5\u8c03\u2f64，\u2f7d\u662f\u5728\u7279\u5b9a\u7684\u4e8b\u4ef6\u6216\u6761\u4ef6\u53d1\u2f63\u65f6\u7531\u53e6\u5916\u7684\u2f00\u2f45\u8c03\u2f64\u7684，\u2f64\u4e8e\u5bf9\u8be5\u4e8b\u4ef6\u6216\u6761\u4ef6\u8fdb\u2f8f\u54cd\u5e94.\u3002
\n\u4e0b\u9762\u6211\u4eec\u7528\u4ee3\u7801\u5b9e\u73b0\u4e00\u4e2a\u52a0\u6cd5\u8fd0\u7b97：
\nint add(int a, in<\/p>\n","protected":false},"author":2,"featured_media":90211,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[10187,174,3226,1813,427],"topic":[],"class_list":["post-90213","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-codingplan","tag-c","tag-3226","tag-1813","tag-427"],"yoast_head":"\nC\u8bed\u8a00\u2014\u2014\u6df1\u5ea6\u7406\u89e3\u6307\u9488\uff085\uff09 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/90213.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"C\u8bed\u8a00\u2014\u2014\u6df1\u5ea6\u7406\u89e3\u6307\u9488\uff085\uff09 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"1. \u56de\u8c03\u51fd\u6570\u662f\u4ec0\u4e48？ \u56de\u8c03\u51fd\u6570\u5c31\u662f\u2f00\u4e2a\u901a\u8fc7\u51fd\u6570\u6307\u9488\u8c03\u2f64\u7684\u51fd\u6570\u3002 \u5982\u679c\u4f60\u628a\u51fd\u6570\u7684\u6307\u9488（\u5730\u5740）\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9\u53e6\u2f00\u4e2a\u51fd\u6570，\u5f53\u8fd9\u4e2a\u6307\u9488\u88ab\u2f64\u6765\u8c03\u2f64\u5176\u6240\u6307\u5411\u7684\u51fd\u6570\u65f6，\u88ab\u8c03\u2f64\u7684\u51fd\u6570\u5c31\u662f\u56de\u8c03\u51fd\u6570\u3002\u56de\u8c03\u51fd\u6570\u4e0d\u662f\u7531\u8be5\u51fd\u6570\u7684\u5b9e\u73b0\u2f45\u76f4\u63a5\u8c03\u2f64，\u2f7d\u662f\u5728\u7279\u5b9a\u7684\u4e8b\u4ef6\u6216\u6761\u4ef6\u53d1\u2f63\u65f6\u7531\u53e6\u5916\u7684\u2f00\u2f45\u8c03\u2f64\u7684，\u2f64\u4e8e\u5bf9\u8be5\u4e8b\u4ef6\u6216\u6761\u4ef6\u8fdb\u2f8f\u54cd\u5e94.\u3002 \u4e0b\u9762\u6211\u4eec\u7528\u4ee3\u7801\u5b9e\u73b0\u4e00\u4e2a\u52a0\u6cd5\u8fd0\u7b97： int add(int a, in\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/90213.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-08-04T12:08:43+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260804120842-6a71d64a107bf.png\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/90213.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/90213.html\",\"name\":\"C\u8bed\u8a00\u2014\u2014\u6df1\u5ea6\u7406\u89e3\u6307\u9488\uff085\uff09 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"isPartOf\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\"},\"datePublished\":\"2026-08-04T12:08:43+00:00\",\"dateModified\":\"2026-08-04T12:08:43+00:00\",\"author\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/90213.html#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.wsisp.com\/helps\/90213.html\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/90213.html#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.wsisp.com\/helps\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"C\u8bed\u8a00\u2014\u2014\u6df1\u5ea6\u7406\u89e3\u6307\u9488\uff085\uff09\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\",\"url\":\"https:\/\/www.wsisp.com\/helps\/\",\"name\":\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"description\":\"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"contentUrl\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"caption\":\"admin\"},\"sameAs\":[\"http:\/\/wp.wsisp.com\"],\"url\":\"https:\/\/www.wsisp.com\/helps\/author\/admin\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"C\u8bed\u8a00\u2014\u2014\u6df1\u5ea6\u7406\u89e3\u6307\u9488\uff085\uff09 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.wsisp.com\/helps\/90213.html","og_locale":"zh_CN","og_type":"article","og_title":"C\u8bed\u8a00\u2014\u2014\u6df1\u5ea6\u7406\u89e3\u6307\u9488\uff085\uff09 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","og_description":"1. \u56de\u8c03\u51fd\u6570\u662f\u4ec0\u4e48？ \u56de\u8c03\u51fd\u6570\u5c31\u662f\u2f00\u4e2a\u901a\u8fc7\u51fd\u6570\u6307\u9488\u8c03\u2f64\u7684\u51fd\u6570\u3002 \u5982\u679c\u4f60\u628a\u51fd\u6570\u7684\u6307\u9488（\u5730\u5740）\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9\u53e6\u2f00\u4e2a\u51fd\u6570，\u5f53\u8fd9\u4e2a\u6307\u9488\u88ab\u2f64\u6765\u8c03\u2f64\u5176\u6240\u6307\u5411\u7684\u51fd\u6570\u65f6，\u88ab\u8c03\u2f64\u7684\u51fd\u6570\u5c31\u662f\u56de\u8c03\u51fd\u6570\u3002\u56de\u8c03\u51fd\u6570\u4e0d\u662f\u7531\u8be5\u51fd\u6570\u7684\u5b9e\u73b0\u2f45\u76f4\u63a5\u8c03\u2f64，\u2f7d\u662f\u5728\u7279\u5b9a\u7684\u4e8b\u4ef6\u6216\u6761\u4ef6\u53d1\u2f63\u65f6\u7531\u53e6\u5916\u7684\u2f00\u2f45\u8c03\u2f64\u7684，\u2f64\u4e8e\u5bf9\u8be5\u4e8b\u4ef6\u6216\u6761\u4ef6\u8fdb\u2f8f\u54cd\u5e94.\u3002 \u4e0b\u9762\u6211\u4eec\u7528\u4ee3\u7801\u5b9e\u73b0\u4e00\u4e2a\u52a0\u6cd5\u8fd0\u7b97： int add(int a, in","og_url":"https:\/\/www.wsisp.com\/helps\/90213.html","og_site_name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","article_published_time":"2026-08-04T12:08:43+00:00","og_image":[{"url":"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260804120842-6a71d64a107bf.png"}],"author":"admin","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"admin","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"3 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.wsisp.com\/helps\/90213.html","url":"https:\/\/www.wsisp.com\/helps\/90213.html","name":"C\u8bed\u8a00\u2014\u2014\u6df1\u5ea6\u7406\u89e3\u6307\u9488\uff085\uff09 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","isPartOf":{"@id":"https:\/\/www.wsisp.com\/helps\/#website"},"datePublished":"2026-08-04T12:08:43+00:00","dateModified":"2026-08-04T12:08:43+00:00","author":{"@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41"},"breadcrumb":{"@id":"https:\/\/www.wsisp.com\/helps\/90213.html#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.wsisp.com\/helps\/90213.html"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.wsisp.com\/helps\/90213.html#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.wsisp.com\/helps"},{"@type":"ListItem","position":2,"name":"C\u8bed\u8a00\u2014\u2014\u6df1\u5ea6\u7406\u89e3\u6307\u9488\uff085\uff09"}]},{"@type":"WebSite","@id":"https:\/\/www.wsisp.com\/helps\/#website","url":"https:\/\/www.wsisp.com\/helps\/","name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","description":"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41","name":"admin","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/","url":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","contentUrl":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","caption":"admin"},"sameAs":["http:\/\/wp.wsisp.com"],"url":"https:\/\/www.wsisp.com\/helps\/author\/admin"}]}},"_links":{"self":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/90213","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/comments?post=90213"}],"version-history":[{"count":0,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/90213\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media\/90211"}],"wp:attachment":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media?parent=90213"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/categories?post=90213"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/tags?post=90213"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/topic?post=90213"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}