{"id":74920,"date":"2024-02-27T15:37:26","date_gmt":"2024-02-27T07:37:26","guid":{"rendered":"https:\/\/docs.pingcode.com\/?p=74920"},"modified":"2024-02-27T15:37:43","modified_gmt":"2024-02-27T07:37:43","slug":"%e5%9c%a8c%e8%af%ad%e8%a8%80%e4%b8%ad%e5%a6%82%e4%bd%95%e5%ae%9e%e7%8e%b0%e8%87%aa%e5%ae%9a%e4%b9%89%e7%b1%bb%e5%9e%8b","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/74920.html","title":{"rendered":"\u5728C\u8bed\u8a00\u4e2d\u5982\u4f55\u5b9e\u73b0\u81ea\u5b9a\u4e49\u7c7b\u578b"},"content":{"rendered":"

\"\u5728C\u8bed\u8a00\u4e2d\u5982\u4f55\u5b9e\u73b0\u81ea\u5b9a\u4e49\u7c7b\u578b\"<\/p>\n

\u5728C\u8bed\u8a00\u4e2d\u5b9e\u73b0\u81ea\u5b9a\u4e49\u7c7b\u578b\u7684\u65b9\u6cd5\u4e3b\u8981\u6709<\/strong>\uff1a\u4f7f\u7528\u7ed3\u6784\u4f53\uff08struct\uff09<\/strong>\u3001\u4f7f\u7528\u8054\u5408\u4f53\uff08union\uff09<\/strong>\u3001\u4f7f\u7528\u679a\u4e3e\u7c7b\u578b\uff08enum\uff09<\/strong>\u3001\u4f7f\u7528\u7c7b\u578b\u5b9a\u4e49\uff08typedef\uff09<\/strong>\u3002\u5176\u4e2d\uff0c\u4f7f\u7528\u7ed3\u6784\u4f53\u662f\u6700\u5e38\u89c1\u7684\u65b9\u6cd5<\/strong>\uff0c\u5b83\u5141\u8bb8\u5c06\u591a\u4e2a\u4e0d\u540c\u7c7b\u578b\u7684\u6570\u636e\u7ec4\u5408\u6210\u4e00\u4e2a\u590d\u5408\u7c7b\u578b\uff0c\u4ece\u800c\u65b9\u4fbf\u5730\u5bf9\u8fd9\u4e9b\u6570\u636e\u8fdb\u884c\u7edf\u4e00\u7ba1\u7406\u548c\u64cd\u4f5c\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u5b9a\u4e49\u4e00\u4e2a\u8868\u793a\u5b66\u751f\u4fe1\u606f\u7684\u7ed3\u6784\u4f53\uff0c\u5305\u542b\u5b66\u751f\u7684\u59d3\u540d\u3001\u5b66\u53f7\u3001\u6210\u7ee9\u7b49\u4fe1\u606f\u3002<\/p>\n

## \u4e00\u3001\u4f7f\u7528\u7ed3\u6784\u4f53\u5b9a\u4e49\u81ea\u5b9a\u4e49\u7c7b\u578b<\/strong><\/p>\n

\u7ed3\u6784\u4f53\uff08struct\uff09\u662fC\u8bed\u8a00\u4e2d\u4e00\u79cd\u590d\u5408\u6570\u636e\u7c7b\u578b\uff0c\u5b83\u5141\u8bb8\u5c06\u591a\u4e2a\u4e0d\u540c\u7c7b\u578b\u7684\u53d8\u91cf\u7ec4\u5408\u6210\u4e00\u4e2a\u5355\u4e00\u7684\u7c7b\u578b\u3002\u8fd9\u4f7f\u5f97\u7ed3\u6784\u4f53\u975e\u5e38\u9002\u5408\u7528\u4e8e\u5b9a\u4e49\u81ea\u5b9a\u4e49\u7c7b\u578b\uff0c\u5c24\u5176\u662f\u5f53\u9700\u8981\u8868\u793a\u5177\u6709\u591a\u4e2a\u5c5e\u6027\u7684\u5b9e\u4f53\u65f6\u3002<\/p>\n

### \u5b9a\u4e49\u7ed3\u6784\u4f53<\/strong><\/p>\n

\u5b9a\u4e49\u7ed3\u6784\u4f53\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n

“`c<\/p>\n

struct \u7ed3\u6784\u4f53\u540d\u79f0 {<\/p>\n

\u6570\u636e\u7c7b\u578b \u6210\u54581;<\/p>\n

\u6570\u636e\u7c7b\u578b \u6210\u54582;<\/p>\n

…<\/p>\n

};<\/p>\n

“`<\/p>\n

\u4f8b\u5982\uff0c\u5b9a\u4e49\u4e00\u4e2a\u8868\u793a\u5b66\u751f\u4fe1\u606f\u7684\u7ed3\u6784\u4f53\uff1a<\/p>\n

“`c<\/p>\n

struct Student {<\/p>\n

char name[50];<\/p>\n

int id;<\/p>\n

float score;<\/p>\n

};<\/p>\n

“`<\/p>\n

### \u4f7f\u7528\u7ed3\u6784\u4f53<\/strong><\/p>\n

\u5b9a\u4e49\u4e86\u7ed3\u6784\u4f53\u540e\uff0c\u53ef\u4ee5\u50cf\u4f7f\u7528\u5176\u4ed6\u6570\u636e\u7c7b\u578b\u4e00\u6837\u4f7f\u7528\u5b83\u6765\u58f0\u660e\u53d8\u91cf\uff1a<\/p>\n

“`c<\/p>\n

struct Student student1;<\/p>\n

“`<\/p>\n

\u7136\u540e\uff0c\u53ef\u4ee5\u901a\u8fc7\u70b9\u8fd0\u7b97\u7b26\uff08.\uff09\u6765\u8bbf\u95ee\u7ed3\u6784\u4f53\u6210\u5458\uff1a<\/p>\n

“`c<\/p>\n

strcpy(student1.name, “Alice”);<\/p>\n

student1.id = 123;<\/p>\n

student1.score = 95.5;<\/p>\n

“`<\/p>\n

## \u4e8c\u3001\u4f7f\u7528\u8054\u5408\u4f53\u5b9a\u4e49\u81ea\u5b9a\u4e49\u7c7b\u578b<\/strong><\/p>\n

\u8054\u5408\u4f53\uff08union\uff09\u4e0e\u7ed3\u6784\u4f53\u7c7b\u4f3c\uff0c\u4f46\u6240\u6709\u6210\u5458\u5171\u4eab\u540c\u4e00\u5757\u5185\u5b58\u7a7a\u95f4\u3002\u8fd9\u610f\u5473\u7740\u5728\u540c\u4e00\u65f6\u95f4\u5185\u53ea\u80fd\u5b58\u50a8\u5176\u4e2d\u4e00\u4e2a\u6210\u5458\u7684\u503c\u3002\u8054\u5408\u4f53\u9002\u7528\u4e8e\u5b58\u50a8\u53ef\u80fd\u5177\u6709\u591a\u79cd\u683c\u5f0f\u4f46\u4e0d\u4f1a\u540c\u65f6\u4f7f\u7528\u7684\u6570\u636e\u3002<\/p>\n

### \u5b9a\u4e49\u8054\u5408\u4f53<\/strong><\/p>\n

\u5b9a\u4e49\u8054\u5408\u4f53\u7684\u8bed\u6cd5\u4e0e\u7ed3\u6784\u4f53\u76f8\u4f3c\uff1a<\/p>\n

“`c<\/p>\n

union \u8054\u5408\u4f53\u540d\u79f0 {<\/p>\n

\u6570\u636e\u7c7b\u578b \u6210\u54581;<\/p>\n

\u6570\u636e\u7c7b\u578b \u6210\u54582;<\/p>\n

…<\/p>\n

};<\/p>\n

“`<\/p>\n

\u4f8b\u5982\uff0c\u5b9a\u4e49\u4e00\u4e2a\u53ef\u4ee5\u5b58\u50a8\u6574\u6570\u3001\u6d6e\u70b9\u6570\u6216\u5b57\u7b26\u7684\u8054\u5408\u4f53\uff1a<\/p>\n

“`c<\/p>\n

union Data {<\/p>\n

int i;<\/p>\n

float f;<\/p>\n

char c;<\/p>\n

};<\/p>\n

“`<\/p>\n

### \u4f7f\u7528\u8054\u5408\u4f53<\/strong><\/p>\n

\u58f0\u660e\u5e76\u4f7f\u7528\u8054\u5408\u4f53\u53d8\u91cf\u7684\u65b9\u5f0f\u4e0e\u7ed3\u6784\u4f53\u7c7b\u4f3c\uff1a<\/p>\n

“`c<\/p>\n

union Data data;<\/p>\n

data.i = 10;<\/p>\n

data.f = 23.5;<\/p>\n

data.c = ‘A’;<\/p>\n

“`<\/p>\n

\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u7531\u4e8e\u6240\u6709\u6210\u5458\u5171\u4eab\u5185\u5b58\u7a7a\u95f4\uff0c\u4fee\u6539\u4efb\u4e00\u6210\u5458\u7684\u503c\u90fd\u4f1a\u5f71\u54cd\u5176\u4ed6\u6210\u5458\u3002<\/p>\n

## \u4e09\u3001\u4f7f\u7528\u679a\u4e3e\u7c7b\u578b\u5b9a\u4e49\u81ea\u5b9a\u4e49\u7c7b\u578b<\/strong><\/p>\n

\u679a\u4e3e\u7c7b\u578b\uff08enum\uff09\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u6570\u636e\u7c7b\u578b\uff0c\u5b83\u5141\u8bb8\u5c06\u4e00\u7ec4\u6574\u6570\u503c\u4e0e\u76f8\u5e94\u7684\u6807\u8bc6\u7b26\u5173\u8054\u8d77\u6765\uff0c\u4f7f\u5f97\u4ee3\u7801\u66f4\u52a0\u6e05\u6670\u6613\u61c2\u3002<\/p>\n

### \u5b9a\u4e49\u679a\u4e3e\u7c7b\u578b<\/strong><\/p>\n

\u5b9a\u4e49\u679a\u4e3e\u7c7b\u578b\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n

“`c<\/p>\n

enum \u679a\u4e3e\u540d\u79f0 {<\/p>\n

\u6807\u8bc6\u7b261 = \u503c1,<\/p>\n

\u6807\u8bc6\u7b262 = \u503c2,<\/p>\n

…<\/p>\n

};<\/p>\n

“`<\/p>\n

\u4f8b\u5982\uff0c\u5b9a\u4e49\u4e00\u4e2a\u8868\u793a\u661f\u671f\u7684\u679a\u4e3e\u7c7b\u578b\uff1a<\/p>\n

“`c<\/p>\n

enum Weekday {<\/p>\n

Sunday = 0,<\/p>\n

Monday,<\/p>\n

Tuesday,<\/p>\n

Wednesday,<\/p>\n

Thursday,<\/p>\n

Friday,<\/p>\n

Saturday<\/p>\n

};<\/p>\n

“`<\/p>\n

### \u4f7f\u7528\u679a\u4e3e\u7c7b\u578b<\/strong><\/p>\n

\u5b9a\u4e49\u4e86\u679a\u4e3e\u7c7b\u578b\u540e\uff0c\u53ef\u4ee5\u50cf\u4f7f\u7528\u5176\u4ed6\u57fa\u672c\u6570\u636e\u7c7b\u578b\u4e00\u6837\u4f7f\u7528\u5b83\u6765\u58f0\u660e\u53d8\u91cf\uff1a<\/p>\n

“`c<\/p>\n

enum Weekday today;<\/p>\n

today = Monday;<\/p>\n

“`<\/p>\n

## \u56db\u3001\u4f7f\u7528typedef\u5b9a\u4e49\u81ea\u5b9a\u4e49\u7c7b\u578b<\/strong><\/p>\n

typedef\u662fC\u8bed\u8a00\u4e2d\u7684\u4e00\u4e2a\u5173\u952e\u5b57\uff0c\u5b83\u5141\u8bb8\u4e3a\u73b0\u6709\u7684\u6570\u636e\u7c7b\u578b\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u540d\u79f0\uff08\u522b\u540d\uff09\u3002\u8fd9\u5728\u5b9a\u4e49\u590d\u6742\u7684\u6570\u636e\u7c7b\u578b\u65f6\u975e\u5e38\u6709\u7528\u3002<\/p>\n

### \u4f7f\u7528typedef\u5b9a\u4e49\u522b\u540d<\/strong><\/p>\n

\u4f7f\u7528typedef\u5b9a\u4e49\u522b\u540d\u7684\u8bed\u6cd5\u5982\u4e0b\uff1a<\/p>\n

“`c<\/p>\n

typedef \u539f\u59cb\u6570\u636e\u7c7b\u578b \u65b0\u6570\u636e\u7c7b\u578b\u540d\u79f0;<\/p>\n

“`<\/p>\n

\u4f8b\u5982\uff0c\u4e3aint\u5b9a\u4e49\u4e00\u4e2a\u522b\u540dinteger\uff1a<\/p>\n

“`c<\/p>\n

typedef int integer;<\/p>\n

“`<\/p>\n

\u7136\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528\u65b0\u7684\u6570\u636e\u7c7b\u578b\u540d\u79f0\u6765\u58f0\u660e\u53d8\u91cf\uff1a<\/p>\n

“`c<\/p>\n

integer num = 10;<\/p>\n

“`<\/p>\n

### \u7ed3\u5408\u7ed3\u6784\u4f53\u3001\u8054\u5408\u4f53\u548c\u679a\u4e3e\u7c7b\u578b\u4f7f\u7528typedef<\/strong><\/p>\n

typedef\u7ecf\u5e38\u4e0e\u7ed3\u6784\u4f53\u3001\u8054\u5408\u4f53\u548c\u679a\u4e3e\u7c7b\u578b\u7ed3\u5408\u4f7f\u7528\uff0c\u4ee5\u7b80\u5316\u590d\u6742\u7c7b\u578b\u7684\u58f0\u660e\u3002\u4f8b\u5982\uff0c\u4e3a\u4e4b\u524d\u5b9a\u4e49\u7684Student\u7ed3\u6784\u4f53\u5b9a\u4e49\u4e00\u4e2a\u522b\u540d\uff1a<\/p>\n

“`c<\/p>\n

typedef struct Student {<\/p>\n

char name[50];<\/p>\n

int id;<\/p>\n

float score;<\/p>\n

} StudentInfo;<\/p>\n

“`<\/p>\n

\u8fd9\u6837\uff0c\u5c31\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528StudentInfo\u6765\u58f0\u660e\u53d8\u91cf\uff0c\u800c\u4e0d\u9700\u8981\u6bcf\u6b21\u90fd\u4f7f\u7528struct\u5173\u952e\u5b57\uff1a<\/p>\n

“`c<\/p>\n

StudentInfo student2;<\/p>\n

“`<\/p>\n

## \u603b\u7ed3<\/strong><\/p>\n

\u5728C\u8bed\u8a00\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u7ed3\u6784\u4f53\u3001\u8054\u5408\u4f53\u3001\u679a\u4e3e\u7c7b\u578b\u548ctypedef\u6765\u5b9e\u73b0\u81ea\u5b9a\u4e49\u7c7b\u578b\u3002\u8fd9\u4e9b\u65b9\u6cd5\u63d0\u4f9b\u4e86\u7075\u6d3b\u6027\u548c\u53ef\u8bfb\u6027\uff0c\u4f7f\u5f97\u4ee3\u7801\u66f4\u52a0\u7ed3\u6784\u5316\u548c\u6613\u4e8e\u7ef4\u62a4\u3002\u5728\u5b9e\u9645\u7f16\u7a0b\u4e2d\uff0c\u5e94\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u6765\u5b9a\u4e49\u81ea\u5b9a\u4e49\u7c7b\u578b\u3002<\/p>\n

\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n

\u5982\u4f55\u5728C\u8bed\u8a00\u4e2d\u5b9a\u4e49\u81ea\u5b9a\u4e49\u7c7b\u578b\uff1f<\/strong><\/p>\n

\u5728C\u8bed\u8a00\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7`typedef`\u5173\u952e\u5b57\u6765\u5b9a\u4e49\u81ea\u5b9a\u4e49\u7c7b\u578b\u3002\u4f7f\u7528`typedef`\u53ef\u4ee5\u4e3a\u73b0\u6709\u7684\u6570\u636e\u7c7b\u578b\u521b\u5efa\u4e00\u4e2a\u65b0\u7684\u540d\u5b57\uff0c\u4ece\u800c\u65b9\u4fbf\u4ee3\u7801\u7684\u7406\u89e3\u548c\u7ef4\u62a4\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u8fd9\u6837\u5b9a\u4e49\u4e00\u4e2a\u81ea\u5b9a\u4e49\u7c7b\u578b\uff1a<\/p>\n

“`c
\ntypedef int Age; \/\/ \u5b9a\u4e49\u540d\u4e3aAge\u7684\u81ea\u5b9a\u4e49\u7c7b\u578b\uff0c\u5b9e\u9645\u4e0a\u5c31\u662fint\u7c7b\u578b\u7684\u522b\u540d
\n“`<\/p>\n

\u5b9a\u4e49\u5b8c\u6bd5\u540e\uff0c\u5c31\u53ef\u4ee5\u50cf\u4f7f\u7528\u5176\u4ed6\u6570\u636e\u7c7b\u578b\u4e00\u6837\u6765\u4f7f\u7528\u8fd9\u4e2a\u81ea\u5b9a\u4e49\u7c7b\u578b\u4e86\u3002\u6bd4\u5982\uff1a<\/p>\n

“`c
\nAge myAge = 25; \/\/ \u58f0\u660e\u4e00\u4e2aAge\u7c7b\u578b\u7684\u53d8\u91cfmyAge\uff0c\u5e76\u8d4b\u503c\u4e3a25
\n“`<\/p>\n

\u901a\u8fc7\u5b9a\u4e49\u81ea\u5b9a\u4e49\u7c7b\u578b\uff0c\u53ef\u4ee5\u8ba9\u4ee3\u7801\u66f4\u5177\u53ef\u8bfb\u6027\uff0c\u66f4\u6613\u4e8e\u7ef4\u62a4\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728C\u8bed\u8a00\u4e2d\u5b9e\u73b0\u81ea\u5b9a\u4e49\u7c7b\u578b\u7684\u65b9\u6cd5\u4e3b\u8981\u6709\uff1a\u4f7f\u7528\u7ed3\u6784\u4f53\uff08struct\uff09\u3001\u4f7f\u7528\u8054\u5408\u4f53\uff08union\uff09\u3001\u4f7f\u7528\u679a\u4e3e\u7c7b\u578b\uff08en […]","protected":false},"author":1,"featured_media":74923,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/74920"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=74920"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/74920\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/74923"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=74920"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=74920"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=74920"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}