{"id":105112,"date":"2026-09-13T20:57:13","date_gmt":"2026-09-13T12:57:13","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/105112.html"},"modified":"2026-09-13T20:57:13","modified_gmt":"2026-09-13T12:57:13","slug":"%e8%a1%a5%ef%bc%9a%e5%8f%98%e9%87%8f%e4%b8%8e%e5%b8%b8%e9%87%8f","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/105112.html","title":{"rendered":"\u8865\uff1a\u53d8\u91cf\u4e0e\u5e38\u91cf"},"content":{"rendered":"

\u4e00.\u533a\u522b<\/h2>\n

\u4e24\u8005\u90fd\u662f\u7528\u6765\u50a8\u5b58\u6570\u636e\u7684\u5bb9\u5668，\u4f46\u53d8\u91cf\u7684\u503c\u53ef\u4ee5\u6539\u53d8，\u800c\u5e38\u91cf\u7684\u503c\u4e00\u4f46\u8bbe\u5b9a\u65e0\u6cd5\u518d\u6b21\u4fee\u6539<\/p>\n

\u4e8c.\u53d8\u91cf（\u53ef\u6539\u503c）<\/h2>\n

1.\u7c7b\u578b<\/h3>\n

date_type name
\n\/\/date_type \u6570\u636e\u7c7b\u578b<\/span>
\n\/\/name \u6570\u636e\u540d<\/span><\/p>\n

2.\u547d\u540d<\/h3>\n

（1）\u6700\u597d\u6709\u610f\u4e49
\n（2）\u53ea\u80fd\u7531\u5b57\u6bcd（\u533a\u5206\u5927\u5c0f\u5199），\u6570\u5b57，\u4e0b\u5212\u7ebf（\u201c_\u201d）\u7ec4\u6210
\n（3）\u4e0d\u80fd\u4ee5\u6570\u5b57\u5f00\u5934
\n（4）\u957f\u5ea6\u4e0d\u80fd\u8d85\u8fc763\u4e2a\u5b57\u7b26
\n（5）\u53d8\u91cf\u540d\u4e0d\u80fd\u4f7f\u7528\u5173\u952e\u5b57
\n（6）\u533a\u5206\u5927\u5c0f\u5199（int abc != int Abc）
\n（7）\u53d8\u91cf\u6700\u597d\u521d\u59cb\u5316<\/p>\n

3.\u521d\u59cb\u5316\u4e0e\u8d4b\u503c\u7684\u533a\u5206<\/h3>\n

\u7b2c\u4e00\u6b21\u4e3a\u521d\u59cb\u5316，\u7b2c\u4e8c\u6b21\u4e3a\u8d4b\u503c<\/p>\n

date_type name =<\/span> 1<\/span>;<\/span>\/\/\u521d\u59cb\u5316<\/span>
\nname =<\/span> 2<\/span>;<\/span>\/\/\u8d4b\u503c<\/span><\/p>\n

4.\u53d8\u91cf\u7684\u5206\u7c7b<\/h3>\n

\u5168\u5c40\u53d8\u91cf\u4e0e\u5c40\u90e8\u53d8\u91cf
\n（1）\u5168\u5c40\u53d8\u91cf（\u653e\u5728\u51fd\u6570\u5916，\u8303\u56f4\u5e7f）
\n\u4f5c\u7528\u57df：\u4ece\u5b9a\u4e49\u4f4d\u7f6e\u5f00\u59cb，\u5230\u6574\u4e2a\u6e90\u6587\u4ef6\u672b\u5c3e\u90fd\u53ef\u4f7f\u7528（\u6574\u4e2a\u7a0b\u5e8f）
\n\u3010\u82e5\u5176\u4ed6\u7a0b\u5e8f\u60f3\u7528，\u53ef\u901a\u8fc7extern\u58f0\u660e\u3011<\/p>\n

\u751f\u547d\u5468\u671f：\u7a0b\u5e8f\u542f\u52a8\u5230\u7a0b\u5e8f\u7ed3\u675f
\n\u3010\u5b58\u653e\u5728\u9759\u6001\u5b58\u50a8\u533a\/\u6570\u636e\u6bb5\u3011<\/p>\n

\u521d\u59cb\u503c：\u82e5\u672a\u521d\u59cb\u5316，\u7cfb\u7edf\u4f1a\u81ea\u52a8\u521d\u59cb\u5316\u4e3a0
\n\u3010\u6216\\\\0，NULL\u3011<\/p>\n

\u6ce8：\u8fc7\u591a\u7684\u4f7f\u7528\u4f1a\u4f7f\u6a21\u5757\u95f4\u8026\u5408\u5ea6\u8fc7\u9ad8，\u8c03\u8bd5\u56f0\u96be，\u8c28\u614e\u4f7f\u7528
\n\u3010\u8026\u5408\u5ea6\u6307\u4ee3\u7801\u4e0d\u591f\u72ec\u7acb，\u4ee3\u7801\u9700\u9ad8\u5185\u805a，\u4f4e\u8026\u5408\u3011<\/p>\n

（2）\u5c40\u90e8\u53d8\u91cf（\u653e\u5728\u51fd\u6570\u5185，\u7cbe\u5ea6\u9ad8）
\n\u4f5c\u7528\u57df：\u4ec5\u9650\u4e8e\u5b9a\u4e49\u5b83\u7684\u51fd\u6570\u6216\u4ee3\u7801\u5757\u5185\u90e8，\u5916\u90e8\u65e0\u6cd5\u4f7f\u7528<\/p>\n

\u751f\u547d\u5468\u671f：\u8fdb\u5165\u51fd\u6570\/\u4ee3\u7801\u65f6\u521b\u5efa\u5230\u9000\u51fa\u65f6\u9500\u6bc1
\n\u3010\u5b58\u5728\u5185\u5b58\u7684\u6808\u533a\u3011<\/p>\n

\u521d\u59cb\u503c：\u82e5\u672a\u521d\u59cb\u5316，\u503c\u9ed8\u8ba4\u4e3a\u5783\u573e\u503c（\u4e0d\u786e\u5b9a\u7684\u968f\u673a\u6570），\u5efa\u8bae\u521d\u59cb\u5316<\/p>\n

\u4f18\u5148\u7ea7：\u5c40\u90e8\u4f18\u5148\u4e8e\u5168\u5c40<\/p>\n

5.\u53d8\u91cf\u672c\u8d28<\/h3>\n

\u521b\u5efa\u53d8\u91cf\u7684\u672c\u8d28：\u5728\u5185\u5b58\u4e0a\u7533\u8bf7\u7a7a\u95f4
\n\u53d8\u91cf\u7c7b\u578b\u7684\u610f\u4e49：\u7533\u8bf7\u7a7a\u95f4\u5927\u5c0f<\/p>\n

6.\u5b58\u50a8<\/h3>\n

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path,#mermaid-svg-ityn30DwLPCo5c3f .section-root circle,#mermaid-svg-ityn30DwLPCo5c3f .section-root polygon{fill:hsl(240, 100%, 46.2745098039%);}#mermaid-svg-ityn30DwLPCo5c3f .section-root text{fill:#ffffff;}#mermaid-svg-ityn30DwLPCo5c3f .section-root span{color:#ffffff;}#mermaid-svg-ityn30DwLPCo5c3f .section-2 span{color:#ffffff;}#mermaid-svg-ityn30DwLPCo5c3f .icon-container{height:100%;display:flex;justify-content:center;align-items:center;}#mermaid-svg-ityn30DwLPCo5c3f .edge{fill:none;}#mermaid-svg-ityn30DwLPCo5c3f .mindmap-node-label{dy:1em;alignment-baseline:middle;text-anchor:middle;dominant-baseline:middle;text-align:center;}#mermaid-svg-ityn30DwLPCo5c3f :root{–mermaid-font-family:\\”trebuchet ms\\”,verdana,arial,sans-serif;}<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n

\u5185\u5b58（c\/c++\u9700\u5173\u6ce8\u7684\u4e09\u533a）<\/p>\n

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\u6808\u533a <\/p>\n

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\u5c40\u90e8\u53d8\u91cf，\u51fd\u6570\u53c2\u6570<\/p>\n

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\u9ed8\u8ba4\u4e0d\u7ed9\u521d\u59cb\u503c<\/p>\n

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\u52a8\u6001\u5185\u5b58\u7ba1\u7406，maloc，calloc，realloc，free<\/p>\n

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\u9759\u6001\u53e3<\/p>\n

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\u5168\u5c40\u53d8\u91cf，\u9759\u6001\u53d8\u91cf<\/p>\n

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\u9ed8\u8ba4\u521d\u59cb\u503c\u4e3a0<\/p>\n

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\u4e09.\u5e38\u91cf<\/h2>\n

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path,#mermaid-svg-EtzPRgwVkpPRu7I4 .section-root circle,#mermaid-svg-EtzPRgwVkpPRu7I4 .section-root polygon{fill:hsl(240, 100%, 46.2745098039%);}#mermaid-svg-EtzPRgwVkpPRu7I4 .section-root text{fill:#ffffff;}#mermaid-svg-EtzPRgwVkpPRu7I4 .section-root span{color:#ffffff;}#mermaid-svg-EtzPRgwVkpPRu7I4 .section-2 span{color:#ffffff;}#mermaid-svg-EtzPRgwVkpPRu7I4 .icon-container{height:100%;display:flex;justify-content:center;align-items:center;}#mermaid-svg-EtzPRgwVkpPRu7I4 .edge{fill:none;}#mermaid-svg-EtzPRgwVkpPRu7I4 .mindmap-node-label{dy:1em;alignment-baseline:middle;text-anchor:middle;dominant-baseline:middle;text-align:center;}#mermaid-svg-EtzPRgwVkpPRu7I4 :root{–mermaid-font-family:\\”trebuchet ms\\”,verdana,arial,sans-serif;}<\/span><\/span><\/span><\/span><\/p>\n

\u5e38\u91cf<\/p>\n

<\/span><\/p>\n

\u5b57\u9762\u5e38\u91cf<\/p>\n

<\/span><\/p>\n

\u7b26\u53f7\u5e38\u91cf<\/p>\n

<\/span><\/p>\n

const\u5e38\u91cf<\/p>\n

<\/span><\/p>\n

\u679a\u4e3e\u5e38\u91cf<\/p>\n

<\/span><\/p>\n

2.\u5b57\u9762\u5e38\u91cf<\/h3>\n

（1）\u5b57\u7b26\u5e38\u91cf：
\n\u2018a\u2019，\u2018b\u2019，\u2018c\u2019
\n（2）\u6574\u578b\u5e38\u91cf：
\n\u5341\u8fdb\u5236：123，-123,0
\n\u516b\u8fdb\u5236：037（\u4ee50\u5f00\u5934）\u3010=31\u3011
\n\u5341\u516d\u8fdb\u5236：0x1F（\u4ee50x\/0X\u5f00\u5934）\u3010=31\u3011
\n（3）\u540e\u7f00：
\nu\/U：unsigned \u65e0\u7b26\u53f7\u6574\u578b
\nl\/L:long \u957f\u6574\u578b（\u53ef\u4e0eu\/U\u7ec4\u5408）
\nll\/LL:long long \u957f\u957f\u6574\u578b（\u53ef\u4e0eu\/U\u7ec4\u5408）
\n（4）\u6d6e\u70b9\u578b：
\n\u65e0\u540e\u7f00
\n3.14\u3010double\u3011
\n\u6709\u540e\u7f00
\n3.14f\u3010float\u3011
\n3.14L\u3010long double\u3011
\n1.2e3\u3010\u79d1\u5b66\u8ba1\u6570\u6cd5，1.2*10^3\u3011<\/p>\n

3.\u7b26\u53f7\u5e38\u91cf<\/h3>\n

\u5b9a\u4e49\u51fa\u6765\u7684\u5e38\u91cf（\u7528#define）<\/p>\n

#<\/span>define<\/span> \u7b26\u53f7 \u5e38\u91cf<\/span><\/span>
\n\/\/#define A 100,\u6b64\u65f6A\u4e3a\u7b26\u53f7\u5e38\u91cf，\u503c\u4e3a100<\/span>
\n\/\/\u4e0d\u80fd\u518d\u7ed9A\u8d4b\u503c（\u5e38\u91cf\u4e0d\u80fd\u6539）<\/span><\/p>\n

\u6ce8：1.\u7b26\u53f7\u5e38\u91cf\u4e0d\u80fd\u518d\u6b21\u8d4b\u503c
\n2.\u7b26\u53f7\u5e38\u91cf\u4e0d\u5206\u5168\u5c40\u8fd8\u662f\u5c40\u90e8，\u5b9a\u4e49\u540e\u6574\u4e2a\u7a0b\u5e8f\u4ee5\u4e0b\u90fd\u53ef\u4f7f\u7528<\/p>\n

4.const \u4fee\u9970\u7684\u5e38\u91cf<\/h3>\n

\u5728\u521b\u5efa\u53d8\u91cf\u524d\u5728\u53d8\u91cf\u7c7b\u578b\u524d\u52a0const（\u540e\u7eed\u4e0d\u80fd\u518d\u6b64\u4fee\u9970\u8be5\u53d8\u91cf）<\/p>\n

const<\/span> date_type name =<\/span> \u5e38\u91cf
\n\/\/const int a = 100<\/span><\/p>\n

\u672c\u8d28\u4e0a\u662f\u53d8\u91cf，\u4f46\u662fconst\u4fee\u9970\u540e\u4e0d\u80fd\u518d\u6539\u4e86<\/p>\n","protected":false},"excerpt":{"rendered":"

\u4e00.\u533a\u522b
\n\u4e24\u8005\u90fd\u662f\u7528\u6765\u50a8\u5b58\u6570\u636e\u7684\u5bb9\u5668，\u4f46\u53d8\u91cf\u7684\u503c\u53ef\u4ee5\u6539\u53d8，\u800c\u5e38\u91cf\u7684\u503c\u4e00\u4f46\u8bbe\u5b9a\u65e0\u6cd5\u518d\u6b21\u4fee\u6539
\n\u4e8c.\u53d8\u91cf（\u53ef\u6539\u503c）
\n1.\u7c7b\u578b
\ndate_type name
\n\/\/date_type \u6570\u636e\u7c7b\u578b
\n\/\/name \u6570\u636e\u540d2.\u547d\u540d
\n（1）\u6700\u597d\u6709\u610f\u4e49
\n（2）\u53ea\u80fd\u7531\u5b57\u6bcd（\u533a\u5206\u5927\u5c0f\u5199），\u6570\u5b57，\u4e0b\u5212\u7ebf（\u201c_\u201d&#xff09<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[174],"topic":[],"class_list":["post-105112","post","type-post","status-publish","format-standard","hentry","category-server","tag-c"],"yoast_head":"\n\u8865\uff1a\u53d8\u91cf\u4e0e\u5e38\u91cf - \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\/105112.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u8865\uff1a\u53d8\u91cf\u4e0e\u5e38\u91cf - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u4e00.\u533a\u522b \u4e24\u8005\u90fd\u662f\u7528\u6765\u50a8\u5b58\u6570\u636e\u7684\u5bb9\u5668，\u4f46\u53d8\u91cf\u7684\u503c\u53ef\u4ee5\u6539\u53d8，\u800c\u5e38\u91cf\u7684\u503c\u4e00\u4f46\u8bbe\u5b9a\u65e0\u6cd5\u518d\u6b21\u4fee\u6539 \u4e8c.\u53d8\u91cf（\u53ef\u6539\u503c） 1.\u7c7b\u578b date_type name \/\/date_type \u6570\u636e\u7c7b\u578b \/\/name \u6570\u636e\u540d2.\u547d\u540d （1）\u6700\u597d\u6709\u610f\u4e49 （2）\u53ea\u80fd\u7531\u5b57\u6bcd（\u533a\u5206\u5927\u5c0f\u5199），\u6570\u5b57，\u4e0b\u5212\u7ebf（\u201c_\u201d&#xff09\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/105112.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-09-13T12:57:13+00:00\" \/>\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=\"13 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/105112.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/105112.html\",\"name\":\"\u8865\uff1a\u53d8\u91cf\u4e0e\u5e38\u91cf - 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\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\/105112.html","og_locale":"zh_CN","og_type":"article","og_title":"\u8865\uff1a\u53d8\u91cf\u4e0e\u5e38\u91cf - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","og_description":"\u4e00.\u533a\u522b \u4e24\u8005\u90fd\u662f\u7528\u6765\u50a8\u5b58\u6570\u636e\u7684\u5bb9\u5668，\u4f46\u53d8\u91cf\u7684\u503c\u53ef\u4ee5\u6539\u53d8，\u800c\u5e38\u91cf\u7684\u503c\u4e00\u4f46\u8bbe\u5b9a\u65e0\u6cd5\u518d\u6b21\u4fee\u6539 \u4e8c.\u53d8\u91cf（\u53ef\u6539\u503c） 1.\u7c7b\u578b date_type name \/\/date_type \u6570\u636e\u7c7b\u578b \/\/name \u6570\u636e\u540d2.\u547d\u540d （1）\u6700\u597d\u6709\u610f\u4e49 （2）\u53ea\u80fd\u7531\u5b57\u6bcd（\u533a\u5206\u5927\u5c0f\u5199），\u6570\u5b57，\u4e0b\u5212\u7ebf（\u201c_\u201d&#xff09","og_url":"https:\/\/www.wsisp.com\/helps\/105112.html","og_site_name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","article_published_time":"2026-09-13T12:57:13+00:00","author":"admin","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"admin","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"13 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.wsisp.com\/helps\/105112.html","url":"https:\/\/www.wsisp.com\/helps\/105112.html","name":"\u8865\uff1a\u53d8\u91cf\u4e0e\u5e38\u91cf - 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