{"id":385,"date":"2024-06-13T21:13:26","date_gmt":"2024-06-13T13:13:26","guid":{"rendered":"https:\/\/www.vanforever.com.cn\/?p=385"},"modified":"2024-06-13T21:13:26","modified_gmt":"2024-06-13T13:13:26","slug":"static%e7%9a%84%e7%94%a8%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.vanforever.com.cn\/?p=385","title":{"rendered":"static\u7684\u7528\u6cd5"},"content":{"rendered":"<div  class='collapse-block shadow-sm collapse-block-transparent collapsed hide-border-left'><div class='collapse-block-title'><span class='collapse-block-title-inner'>\u67e5\u770b\u7279\u8272\u56fe\u7247<\/span><i class='collapse-icon fa fa-angle-down'><\/i><\/div><div class='collapse-block-body' style='display:none;'><div class='fancybox-wrapper lazyload-container-unload' data-fancybox='post-images' href='https:\/\/pic.vanforever.com.cn\/Vanforever\/20240610\/wallhaven-2yx5og_3840x2400.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" class=\"alignnone size-large\" data-original=\"https:\/\/pic.vanforever.com.cn\/Vanforever\/20240610\/wallhaven-2yx5og_3840x2400.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" width=\"3840\" height=\"2400\" \/><\/div><\/div><\/div>\n<ol>\n<li><strong>\u5728\u7c7b\u4e2d\uff1a<\/strong>\n<ul>\n<li>\u5f53<code>static<\/code>\u7528\u6765\u4fee\u9970\u7c7b\u6210\u5458\u53d8\u91cf\u65f6\uff0c\u8fd9\u4e2a\u53d8\u91cf\u4f1a\u6210\u4e3a\u7c7b\u7684\u6240\u6709\u5b9e\u4f8b\u4e4b\u95f4\u5171\u4eab\u7684\u5168\u5c40\u53d8\u91cf\uff0c\u4e0d\u4f9d\u8d56\u4e8e\u4efb\u4f55\u7c7b\u5b9e\u4f8b\u3002\u56e0\u6b64\uff0c\u5b83\u4e0d\u662f\u901a\u8fc7\u7c7b\u5b9e\u4f8b\u8bbf\u95ee\uff0c\u800c\u662f\u901a\u8fc7\u7c7b\u540d\u76f4\u63a5\u8bbf\u95ee\u3002\u7531\u4e8e\u4e0d\u5360\u7528\u7c7b\u5b9e\u4f8b\u7684\u5185\u5b58\uff0c\u56e0\u6b64\u5b83\u5b58\u50a8\u5728\u5168\u5c40\u6570\u636e\u533a\u3002<\/li>\n<li>\u5f53<code>static<\/code>\u7528\u6765\u4fee\u9970\u7c7b\u6210\u5458\u51fd\u6570\u65f6\uff0c\u8fd9\u4e2a\u51fd\u6570\u4e0e\u5177\u4f53\u7684\u7c7b\u5b9e\u4f8b\u65e0\u5173\uff0c\u53ea\u80fd\u8bbf\u95ee\u7c7b\u7684\u9759\u6001\u6210\u5458\u53d8\u91cf\u548c\u5176\u4ed6\u9759\u6001\u6210\u5458\u51fd\u6570\u3002\u5b83\u6ca1\u6709<code>this<\/code>\u6307\u9488\uff0c\u56e0\u6b64\u4e0d\u80fd\u8bbf\u95ee\u975e\u9759\u6001\u6210\u5458\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-cpp\" lang=\"cpp\">#include &lt;iostream&gt;\n\nclass MyClass {\nprivate:\n    static int staticVar; \/\/ \u9759\u6001\u6210\u5458\u53d8\u91cf\n    int nonStaticVar; \/\/ \u975e\u9759\u6001\u6210\u5458\u53d8\u91cf\n\npublic:\n    MyClass(int val) : nonStaticVar(val) {}\n\n    static void staticFunc() { \/\/ \u9759\u6001\u6210\u5458\u51fd\u6570\n        \/\/ \u7531\u4e8e\u6ca1\u6709this\u6307\u9488\uff0c\u4e0d\u80fd\u8bbf\u95eenonStaticVar\n        std::cout &lt;&lt; \"Static variable value: \" &lt;&lt; staticVar &lt;&lt; std::endl;\n    }\n\n    void nonStaticFunc() { \/\/ \u975e\u9759\u6001\u6210\u5458\u51fd\u6570\n        std::cout &lt;&lt; \"Non-static variable value: \" &lt;&lt; nonStaticVar &lt;&lt; std::endl;\n    }\n};\n\nint MyClass::staticVar = 10; \/\/ \u9759\u6001\u6210\u5458\u53d8\u91cf\u7684\u5b9a\u4e49\u548c\u521d\u59cb\u5316\n\nint main() {\n    MyClass obj(20);\n    obj.nonStaticFunc(); \/\/ \u8f93\u51fa\u975e\u9759\u6001\u6210\u5458\u53d8\u91cf\u7684\u503c\n\n    MyClass::staticFunc(); \/\/ \u8c03\u7528\u9759\u6001\u6210\u5458\u51fd\u6570\n    return 0;\n}\n\n<\/code><\/pre>\n<\/li>\n<li><strong>\u5728\u51fd\u6570\u4e2d\uff1a<\/strong>\n<ul>\n<li>\u5f53<code>static<\/code>\u7528\u6765\u4fee\u9970\u5c40\u90e8\u53d8\u91cf\u65f6\uff0c\u8fd9\u4e2a\u53d8\u91cf\u7684\u751f\u547d\u5468\u671f\u4f1a\u5ef6\u957f\u5230\u7a0b\u5e8f\u8fd0\u884c\u7ed3\u675f\uff0c\u5b83\u4f1a\u5728\u9759\u6001\u5b58\u50a8\u533a\u5206\u914d\u5185\u5b58\u3002\u8fd9\u610f\u5473\u7740\u51fd\u6570\u8c03\u7528\u7ed3\u675f\u540e\uff0c\u8fd9\u4e2a\u53d8\u91cf\u7684\u503c\u4f1a\u4fdd\u6301\uff0c\u76f4\u5230\u7a0b\u5e8f\u7ed3\u675f\u3002\u4e0b\u6b21\u8fdb\u5165\u8be5\u51fd\u6570\u65f6\uff0c\u8fd9\u4e2a\u53d8\u91cf\u4f1a\u4fdd\u6301\u4e0a\u6b21\u7684\u503c\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-cpp\" lang=\"cpp\">#include &lt;iostream&gt;\n\nvoid func() {\n    static int count = 0; \/\/ \u5c40\u90e8\u9759\u6001\u53d8\u91cf\n    count++;\n    std::cout &lt;&lt; count &lt;&lt; std::endl;\n}\n\nint main() {\n    func(); \/\/ \u8f93\u51fa: 1\n    func(); \/\/ \u8f93\u51fa: 2\n    return 0;\n}\n<\/code><\/pre>\n<\/li>\n<li><strong>\u5728\u6587\u4ef6\u4f5c\u7528\u57df\u4e0b\uff1a<\/strong>\n<ul>\n<li>\u5f53<code>static<\/code>\u7528\u6765\u4fee\u9970\u5168\u5c40\u53d8\u91cf\u6216\u51fd\u6570\u65f6\uff0c\u8fd9\u610f\u5473\u7740\u8fd9\u4e9b\u53d8\u91cf\u6216\u51fd\u6570\u7684\u94fe\u63a5\u5c5e\u6027\u662f\u5185\u90e8\u7684\uff08<code>internal linkage<\/code>\uff09\uff0c\u5b83\u4eec\u53ea\u5728\u5b9a\u4e49\u5b83\u4eec\u7684\u6587\u4ef6\u4e2d\u53ef\u89c1\uff0c\u5176\u4ed6\u6587\u4ef6\u4e0d\u80fd\u901a\u8fc7<code>extern<\/code>\u58f0\u660e\u6765\u5f15\u7528\u5b83\u4eec\u3002\u8fd9\u6837\u53ef\u4ee5\u907f\u514d\u5728\u5176\u4ed6\u6587\u4ef6\u4e2d\u610f\u5916\u91cd\u5b9a\u4e49\u540c\u540d\u53d8\u91cf\u6216\u51fd\u6570\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-cpp\" lang=\"cpp\">\/\/ file1.cpp\nstatic int globalVar = 10; \/\/ \u6587\u4ef6\u4f5c\u7528\u57df\u7684\u9759\u6001\u5168\u5c40\u53d8\u91cf\n\nstatic void globalFunc() { \/\/ \u6587\u4ef6\u4f5c\u7528\u57df\u7684\u9759\u6001\u51fd\u6570\n    std::cout &lt;&lt; \"This is a static global function.\" &lt;&lt; std::endl;\n}\n<\/code><\/pre>\n<pre><code class=\"language-cpp\" lang=\"cpp\">\/\/ file2.cpp\n#include &lt;iostream&gt;\n\nextern int globalVar; \/\/ \u5c1d\u8bd5\u58f0\u660efile1.cpp\u4e2d\u7684\u9759\u6001\u5168\u5c40\u53d8\u91cf\nextern void globalFunc(); \/\/ \u5c1d\u8bd5\u58f0\u660efile1.cpp\u4e2d\u7684\u9759\u6001\u51fd\u6570\n\nint main() {\n    globalFunc();\n    std::cout &lt;&lt; globalVar &lt;&lt; std::endl;\n    return 0;\n}\n\/\/\u8fd9\u6837\u5b50file2.cpp\u4f1a\u53d1\u751f\u62a5\u9519\n<\/code><\/pre>\n<\/li>\n<\/ol>\n<ol start=\"4\">\n<li><strong>\u9ed8\u8ba4\u521d\u59cb\u5316<\/strong>\uff1a\n<ul>\n<li>\u5728\u9759\u6001\u5b58\u50a8\u65f6\u671f\uff0c\u672a\u88ab\u663e\u5f0f\u521d\u59cb\u5316\u7684<code>static<\/code>\u53d8\u91cf\u4f1a\u88ab\u9ed8\u8ba4\u521d\u59cb\u5316\u4e3a0\u3002\u8fd9\u5305\u62ec\u5168\u5c40\u9759\u6001\u53d8\u91cf\u3001\u5c40\u90e8\u9759\u6001\u53d8\u91cf\u548c\u7c7b\u7684\u9759\u6001\u6210\u5458\u53d8\u91cf\u3002<\/li>\n<\/ul>\n<pre><code class=\"language-cpp\" lang=\"cpp\">#include &lt;iostream&gt;\n\nint a;\n\nint main()\n{\n\n    char str[10];\n\n    std::cout &lt;&lt; a &lt;&lt; std::endl;\n    std::cout &lt;&lt; str &lt;&lt; std::endl;\n\n}\n\n\/\/\u8f93\u51fa\n\/\/0\n\/\/\u70eb\u70eb\u70eb\u70eb\u70eb\u70eb\u70eb\u70eb\u70eb\u70eb\u70eb\u70eb\u70eb\u70eb\u70eb\u70eb\u70eb\u70eb\u70eb\u70eb\u70eb\u70eb\u70eb\u70eb?(Q?\n<\/code><\/pre>\n<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u7c7b\u4e2d\uff1a \u5f53static\u7528\u6765\u4fee\u9970\u7c7b\u6210\u5458\u53d8\u91cf\u65f6\uff0c\u8fd9\u4e2a\u53d8\u91cf\u4f1a\u6210\u4e3a\u7c7b\u7684\u6240\u6709\u5b9e\u4f8b\u4e4b\u95f4\u5171\u4eab\u7684\u5168\u5c40\u53d8\u91cf\uff0c\u4e0d\u4f9d\u8d56\u4e8e\u4efb\u4f55\u7c7b\u5b9e\u4f8b [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[4],"class_list":["post-385","post","type-post","status-publish","format-standard","hentry","category-c","tag-c"],"_links":{"self":[{"href":"https:\/\/www.vanforever.com.cn\/index.php?rest_route=\/wp\/v2\/posts\/385","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vanforever.com.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vanforever.com.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vanforever.com.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vanforever.com.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=385"}],"version-history":[{"count":2,"href":"https:\/\/www.vanforever.com.cn\/index.php?rest_route=\/wp\/v2\/posts\/385\/revisions"}],"predecessor-version":[{"id":387,"href":"https:\/\/www.vanforever.com.cn\/index.php?rest_route=\/wp\/v2\/posts\/385\/revisions\/387"}],"wp:attachment":[{"href":"https:\/\/www.vanforever.com.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=385"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vanforever.com.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=385"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vanforever.com.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=385"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}