{"id":64639,"date":"2026-01-23T20:56:29","date_gmt":"2026-01-23T12:56:29","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/64639.html"},"modified":"2026-01-23T20:56:29","modified_gmt":"2026-01-23T12:56:29","slug":"c%e8%af%ad%e8%a8%80%e6%9e%84%e9%80%a0%e6%95%b0%e6%8d%ae%e7%b1%bb%e5%9e%8b%ef%bc%882%ef%bc%89%e4%bb%a5%e5%8f%8a%e5%86%85%e5%ad%98%e7%ae%a1%e7%90%86","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/64639.html","title":{"rendered":"C\u8bed\u8a00\u6784\u9020\u6570\u636e\u7c7b\u578b\uff082\uff09\u4ee5\u53ca\u5185\u5b58\u7ba1\u7406"},"content":{"rendered":"<h3>1. \u7ed3\u6784\u4f53\u6570\u7ec4<\/h3>\n<h4>\u6982\u5ff5<\/h4>\n<p>\u7ed3\u6784\u4f53\u6570\u7ec4\u662f\u6570\u7ec4&#xff0c;\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u90fd\u662f\u7ed3\u6784\u4f53\u7c7b\u578b\u3002<\/p>\n<h4>\u5b9a\u4e49<\/h4>\n<p>c<\/p>\n<p>struct \u7ed3\u6784\u4f53\u540d \u6570\u7ec4\u540d[\u5143\u7d20\u4e2a\u6570];<br \/>\n\u4f8b\u5982&#xff1a;<\/p>\n<p>c<\/p>\n<p>struct student {<br \/>\n    char name[32];<br \/>\n    char sex;<br \/>\n    int age;<br \/>\n    int score;<br \/>\n};<\/p>\n<p>struct student s[3];  \/\/ \u5b9a\u4e49\u4e86\u4e00\u4e2a\u5305\u542b3\u4e2a\u5b66\u751f\u7684\u6570\u7ec4 <\/p>\n<h4>\u521d\u59cb\u5316<\/h4>\n<p>c<\/p>\n<p>struct student s[3] &#061; {<br \/>\n    {&#034;zhangsan&#034;, &#039;m&#039;, 19, 100},<br \/>\n    {&#034;lisi&#034;, &#039;f&#039;, 18, 90},<br \/>\n    {&#034;wanger&#034;, &#039;m&#039;, 17, 85}<br \/>\n}; <\/p>\n<h4>\u8bbf\u95ee<\/h4>\n<p>\u901a\u8fc7\u4e0b\u6807\u8bbf\u95ee\u6bcf\u4e2a\u7ed3\u6784\u4f53\u5143\u7d20&#xff0c;\u518d\u4f7f\u7528.\u6216-&gt;\u8bbf\u95ee\u6210\u5458\u3002<\/p>\n<p>\u793a\u4f8b&#xff1a;\u6253\u5370\u7b2c\u4e00\u4e2a\u5b66\u751f\u7684\u59d3\u540d<\/p>\n<p>c<\/p>\n<p>printf(&#034;%s\\\\n&#034;, s[0].name); <\/p>\n<h4>\u7ec3\u4e60\u793a\u4f8b<\/h4>\n<p>\u4ece\u7ec8\u7aef\u63a5\u6536N&#xff08;N\u22645&#xff09;\u4e2a\u5b66\u751f\u4fe1\u606f&#xff0c;\u6253\u5370\u51fa\u6210\u7ee9\u6700\u4f4e\u7684\u5b66\u751f\u7684\u59d3\u540d\u3002<\/p>\n<p>\u6ce8\u610f&#xff1a;\u9700\u8981\u5c01\u88c5\u4e24\u4e2a\u51fd\u6570&#xff1a;<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"1094\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260123125626-69736ffab1eb3.png\" width=\"977\" \/><\/p>\n<\/p>\n<h3>2. \u5171\u7528\u4f53&#xff08;\u8054\u5408\u4f53&#xff09;<\/h3>\n<h4>\u6982\u5ff5<\/h4>\n<p><span style=\"color:#fe2c24\">\u5171\u7528\u4f53\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u6570\u636e\u7c7b\u578b&#xff0c;\u5141\u8bb8\u5728\u76f8\u540c\u7684\u5185\u5b58\u4f4d\u7f6e\u5b58\u50a8\u4e0d\u540c\u7684\u6570\u636e\u7c7b\u578b\u3002\u4f46\u662f&#xff0c;\u4efb\u4f55\u65f6\u5019\u53ea\u80fd\u6709\u4e00\u4e2a\u6210\u5458\u5e26\u6709\u503c\u3002<\/span><\/p>\n<h4>\u5b9a\u4e49<\/h4>\n<p>c<\/p>\n<p>union \u5171\u7528\u4f53\u540d {<br \/>\n    \u6570\u636e\u7c7b\u578b1 \u6210\u5458\u53d8\u91cf1;<br \/>\n    \u6570\u636e\u7c7b\u578b2 \u6210\u5458\u53d8\u91cf2;<br \/>\n    &#8230;<br \/>\n}; <\/p>\n<h4>\u793a\u4f8b<\/h4>\n<p>c<\/p>\n<p>union Data {<br \/>\n    int i;<br \/>\n    float f;<br \/>\n    char str[20];<br \/>\n}; <\/p>\n<h4>\u5185\u5b58\u5360\u7528<\/h4>\n<p>\u5171\u7528\u4f53\u7684\u5927\u5c0f\u7b49\u4e8e\u5176\u6700\u5927\u6210\u5458\u7684\u5927\u5c0f\u3002<\/p>\n<h4>\u5927\u5c0f\u7aef\u95ee\u9898<\/h4>\n<ul>\n<li>\n<p><span style=\"color:#fe2c24\">\u5c0f\u7aef&#xff1a;\u4f4e\u5730\u5740\u5b58\u4f4e\u5b57\u8282&#xff0c;\u9ad8\u5730\u5740\u5b58\u9ad8\u5b57\u8282&#xff08;Intel x86\u901a\u5e38\u662f\u5c0f\u7aef&#xff09;<\/span><\/p>\n<\/li>\n<li>\n<p><span style=\"color:#fe2c24\">\u5927\u7aef&#xff1a;\u4f4e\u5730\u5740\u5b58\u9ad8\u5b57\u8282&#xff0c;\u9ad8\u5730\u5740\u5b58\u4f4e\u5b57\u8282&#xff08;\u7f51\u7edc\u5b57\u8282\u5e8f\u901a\u5e38\u662f\u5927\u7aef&#xff09;<\/span><\/p>\n<\/li>\n<\/ul>\n<p><span style=\"color:#fe2c24\">\u5224\u65ad\u5927\u5c0f\u7aef\u7684\u4ee3\u7801&#xff08;\u91cd\u8981&#xff09;&#xff1a;<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"826\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260123125627-69736ffb33f19.png\" width=\"869\" \/><\/p>\n<h3>3. \u679a\u4e3e<\/h3>\n<h4>\u6982\u5ff5<\/h4>\n<p>\u679a\u4e3e\u662fC\u8bed\u8a00\u4e2d\u7684\u4e00\u79cd\u57fa\u672c\u6570\u636e\u7c7b\u578b&#xff0c;\u5b83\u53ef\u4ee5\u8ba9\u6570\u636e\u66f4\u7b80\u6d01\u6613\u8bfb\u3002<\/p>\n<h4>\u5b9a\u4e49<\/h4>\n<p>c<\/p>\n<p>enum \u679a\u4e3e\u540d {<br \/>\n    \u679a\u4e3e\u5e38\u91cf1,<br \/>\n    \u679a\u4e3e\u5e38\u91cf2,<br \/>\n    &#8230;<br \/>\n}; <\/p>\n<p>\u9ed8\u8ba4\u60c5\u51b5\u4e0b&#xff0c;\u7b2c\u4e00\u4e2a\u679a\u4e3e\u5e38\u91cf\u7684\u503c\u4e3a0&#xff0c;\u540e\u7eed\u4f9d\u6b21\u9012\u589e\u3002<\/p>\n<h4>\u793a\u4f8b<\/h4>\n<p>c<\/p>\n<p>enum weekday {<br \/>\n    Monday,    \/\/ 0<br \/>\n    Tuesday,   \/\/ 1<br \/>\n    Wednesday, \/\/ 2<br \/>\n    Thursday,  \/\/ 3<br \/>\n    Friday,    \/\/ 4<br \/>\n    Saturday,  \/\/ 5<br \/>\n    Sunday     \/\/ 6<br \/>\n};<br \/>\n\u53ef\u4ee5\u6307\u5b9a\u679a\u4e3e\u5e38\u91cf\u7684\u503c&#xff1a;<\/p>\n<p>c<\/p>\n<p>enum color {<br \/>\n    red &#061; 1,<br \/>\n    green &#061; 2,<br \/>\n    blue &#061; 4<br \/>\n}; <\/p>\n<h3>4. typedef\u5173\u952e\u5b57<\/h3>\n<h4>\u6982\u5ff5<\/h4>\n<p>typedef\u7528\u4e8e\u4e3a\u73b0\u6709\u7684\u7c7b\u578b\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u540d\u5b57&#xff08;\u7c7b\u578b\u522b\u540d&#xff09;&#xff0c;\u4ee5\u7b80\u5316\u4ee3\u7801\u3002<\/p>\n<h4>\u793a\u4f8b<\/h4>\n<p>\u4e3a\u7ed3\u6784\u4f53\u3001\u5171\u7528\u4f53\u3001\u679a\u4e3e\u5b9a\u4e49\u7c7b\u578b\u522b\u540d&#xff1a;<\/p>\n<p>c<\/p>\n<p>typedef struct student {<br \/>\n    char name[32];<br \/>\n    char sex;<br \/>\n    int age;<br \/>\n    int score;<br \/>\n} stu_t;<\/p>\n<p>typedef union Data {<br \/>\n    int i;<br \/>\n    float f;<br \/>\n    char str[20];<br \/>\n} data_un;<\/p>\n<p>typedef enum weekday {<br \/>\n    Monday,<br \/>\n    Tuesday,<br \/>\n    Wednesday,<br \/>\n    Thursday,<br \/>\n    Friday,<br \/>\n    Saturday,<br \/>\n    Sunday<br \/>\n} weekday_en; <\/p>\n<p>\u4f7f\u7528\u522b\u540d\u5b9a\u4e49\u53d8\u91cf&#xff1a;<\/p>\n<p>c<\/p>\n<p>stu_t s1;<br \/>\ndata_un d1;<br \/>\nweekday_en today &#061; Monday; <\/p>\n<h3>5. \u4f4d\u8fd0\u7b97<\/h3>\n<h4>\u4f4d\u8fd0\u7b97\u7b26<\/h4>\n<ul>\n<li>\n<p>&amp;&#xff1a;\u6309\u4f4d\u4e0e<\/p>\n<\/li>\n<li>\n<p>|&#xff1a;\u6309\u4f4d\u6216<\/p>\n<\/li>\n<li>\n<p>^&#xff1a;\u6309\u4f4d\u5f02\u6216<\/p>\n<\/li>\n<li>\n<p>~&#xff1a;\u6309\u4f4d\u53d6\u53cd<\/p>\n<\/li>\n<li>\n<p>&lt;&lt;&#xff1a;\u5de6\u79fb<\/p>\n<\/li>\n<li>\n<p>&gt;&gt;&#xff1a;\u53f3\u79fb<\/p>\n<\/li>\n<\/ul>\n<h4>\u5e94\u7528\u573a\u666f<\/h4>\n<li>\n<p>\u5c06\u67d0\u4f4d\u7f6e1<\/p>\n<p> c<\/p>\n<p>num |&#061; (1 &lt;&lt; n);  \/\/ \u5c06num\u7684\u7b2cn\u4f4d\u7f6e1 <\/p>\n<\/li>\n<li>\n<p>\u5c06\u67d0\u4f4d\u7f6e0<\/p>\n<p> c<\/p>\n<p>num &amp;&#061; ~(1 &lt;&lt; n); \/\/ \u5c06num\u7684\u7b2cn\u4f4d\u7f6e0 <\/p>\n<\/li>\n<li>\n<p>\u4ea4\u6362\u4e24\u4e2a\u6570<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"420\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260123125627-69736ffb6b815.png\" width=\"839\" \/><\/p>\n<\/li>\n<h3>6. \u5185\u5b58\u7ba1\u7406<\/h3>\n<h4>\u5185\u5b58\u7a7a\u95f4\u5206\u5e03<\/h4>\n<p>C\u8bed\u8a00\u7a0b\u5e8f\u7684\u5185\u5b58\u7a7a\u95f4\u5206\u4e3a\u4ee5\u4e0b\u51e0\u4e2a\u533a\u57df&#xff1a;<\/p>\n<ul>\n<li>\n<p>\u6808\u533a&#xff08;stack&#xff09;&#xff1a;\u7531\u7f16\u8bd1\u5668\u81ea\u52a8\u5206\u914d\u91ca\u653e&#xff0c;\u5b58\u653e\u5c40\u90e8\u53d8\u91cf\u3001\u51fd\u6570\u53c2\u6570\u7b49\u3002<\/p>\n<\/li>\n<li>\n<p>\u5806\u533a&#xff08;heap&#xff09;&#xff1a;\u7531\u7a0b\u5e8f\u5458\u624b\u52a8\u5206\u914d\u91ca\u653e&#xff0c;\u901a\u8fc7malloc\u3001calloc\u3001realloc\u548cfree\u51fd\u6570\u64cd\u4f5c\u3002<\/p>\n<\/li>\n<li>\n<p>\u5168\u5c40\/\u9759\u6001\u5b58\u50a8\u533a&#xff1a;\u5b58\u653e\u5168\u5c40\u53d8\u91cf\u548c\u9759\u6001\u53d8\u91cf&#xff08;static&#xff09;\u3002<\/p>\n<\/li>\n<li>\n<p>\u5e38\u91cf\u533a&#xff1a;\u5b58\u653e\u5e38\u91cf\u5b57\u7b26\u4e32\u7b49\u3002<\/p>\n<\/li>\n<li>\n<p>\u4ee3\u7801\u533a&#xff1a;\u5b58\u653e\u7a0b\u5e8f\u7684\u4e8c\u8fdb\u5236\u4ee3\u7801\u3002<\/p>\n<\/li>\n<\/ul>\n<p><span style=\"color:#fe2c24\">\u56fe\u793a&#xff1a;<\/span><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" alt=\"\" height=\"628\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/01\/20260123125627-69736ffb942a1.png\" width=\"962\" \/><\/p>\n<h4>\u5806\u533a\u5185\u5b58\u7ba1\u7406\u51fd\u6570<\/h4>\n<li>\n<p>malloc<\/p>\n<p>c<\/p>\n<p> void *malloc(size_t size); <\/p>\n<p>\u529f\u80fd&#xff1a;\u7533\u8bf7size\u4e2a\u5b57\u8282\u7684\u5806\u533a\u7a7a\u95f4\u3002 \u8fd4\u56de\u503c&#xff1a;\u6210\u529f\u8fd4\u56de\u7533\u8bf7\u5230\u7684\u7a7a\u95f4\u9996\u5730\u5740&#xff0c;\u5931\u8d25\u8fd4\u56deNULL\u3002<\/p>\n<\/li>\n<li>\n<p>free<\/p>\n<p>c<\/p>\n<p> void free(void *ptr); <\/p>\n<p>\u529f\u80fd&#xff1a;\u91ca\u653eptr\u6307\u5411\u7684\u5806\u533a\u7a7a\u95f4\u3002<\/p>\n<\/li>\n<h4>\u793a\u4f8b<\/h4>\n<p>c<\/p>\n<p>#include &lt;stdio.h&gt;<br \/>\n#include &lt;stdlib.h&gt;<\/p>\n<p>int main() {<br \/>\n    int *p &#061; (int *)malloc(10 * sizeof(int)); \/\/ \u7533\u8bf710\u4e2a\u6574\u578b\u7a7a\u95f4<br \/>\n    if (p &#061;&#061; NULL) {<br \/>\n        printf(&#034;\u5185\u5b58\u7533\u8bf7\u5931\u8d25\\\\n&#034;);<br \/>\n        return -1;<br \/>\n    }<\/p>\n<p>    for (int i &#061; 0; i &lt; 10; i&#043;&#043;) {<br \/>\n        p[i] &#061; i;<br \/>\n    }<\/p>\n<p>    for (int i &#061; 0; i &lt; 10; i&#043;&#043;) {<br \/>\n        printf(&#034;%d &#034;, p[i]);<br \/>\n    }<br \/>\n    printf(&#034;\\\\n&#034;);<\/p>\n<p>    free(p); \/\/ \u91ca\u653e\u5185\u5b58<br \/>\n    return 0;<br \/>\n} <\/p>\n<h4>\u6808\u533a\u4e0e\u5806\u533a\u7684\u533a\u522b<\/h4>\n<ul>\n<li>\n<p><span style=\"color:#fe2c24\">\u6808\u533a\u662f\u7531\u64cd\u4f5c\u7cfb\u7edf\u7ba1\u7406&#xff0c;\u64cd\u4f5c\u7cfb\u7edf\u8d1f\u8d23\u5bf9\u7a7a\u95f4\u7684\u7533\u8bf7\u91ca\u653e&#xff0c;\u4e00\u822c\u7528\u4e8e\u5b58\u653e\u5c40\u90e8\u53d8\u91cf&#xff0c;\u6267\u884c\u5230\u53d8 \u91cf\u5b9a\u4e49\u5f00\u8f9f\u7a7a\u95f4&#xff0c;\u8d85\u8fc7\u53d8\u91cf\u4f5c\u7528\u57df&#xff0c;\u56de\u6536\u53d8\u91cf\u7a7a\u95f4<\/span><\/p>\n<\/li>\n<li>\n<p><span style=\"color:#fe2c24\">\u5806\u533a\u662f\u7531\u7a0b\u5e8f\u5458\u624b\u52a8\u7ba1\u7406&#xff0c;\u7a0b\u5e8f\u5458\u53ef\u4ee5\u901a\u8fc7malloc\u7533\u8bf7\u5806\u533a\u7a7a\u95f4&#xff0c;\u4f7f\u7528free\u91ca\u653e\u5806\u533a\u7a7a\u95f4 \u9891\u7e41\u4f7f\u7528\u7684<\/span><\/p>\n<\/li>\n<li>\n<p><span style=\"color:#fe2c24\">\u5c0f\u6570\u636e\u7a7a\u95f4\u4e00\u822c\u7528\u6808\u533a<\/span><\/p>\n<\/li>\n<li>\n<p><span style=\"color:#fe2c24\">\u5927\u7684\u6570\u636e\u5b58\u50a8\u7a7a\u95f4\u4e00\u822c\u4f7f\u7528\u5806\u533a<\/span><\/p>\n<\/li>\n<li>\n<p><span style=\"color:#fe2c24\">\u6808\u7684\u589e\u957f\u65b9\u5411\u4e3a\u81ea\u9ad8\u5411\u4f4e\u589e\u957f&#xff0c;\u5806\u7684\u589e\u957f\u65b9\u5411\u4e3a\u81ea\u4f4e\u5411\u9ad8\u589e\u957f<\/span><\/p>\n<\/li>\n<\/ul>\n<h3><span style=\"color:#0d0016\">\u7ec3\u4e60&#xff1a;<\/span><\/h3>\n<p>\u6709\u4e00\u4e2a\u73ed\u76844\u4e2a\u5b66\u751f&#xff0c;\u67095\u95e8\u8bfe\u7a0b\u3002<\/p>\n<p>struct student { \u200b char name[32]; 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