{"id":40731,"date":"2023-12-11T14:51:29","date_gmt":"2023-12-11T06:51:29","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=40731"},"modified":"2023-12-11T14:51:29","modified_gmt":"2023-12-11T06:51:29","slug":"c%e5%85%b3%e9%94%ae%e5%ad%97static%e3%80%81const%e3%80%81extern%e4%bd%9c%e7%94%a8","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/11\/c%e5%85%b3%e9%94%ae%e5%ad%97static%e3%80%81const%e3%80%81extern%e4%bd%9c%e7%94%a8\/","title":{"rendered":"C\u5173\u952e\u5b57static\u3001const\u3001extern\u4f5c\u7528"},"content":{"rendered":"

“`” static\u548cconst\u7684\u4f5c\u7528\u5728\u63cf\u8ff0\u65f6\u4e3b\u8981\u4ece\u7c7b\u5185\u548c\u7c7b\u5916\u4e24\u4e2a\u65b9\u9762\u53bb\u8bb2\uff1a<\/p>\n

static\u5173\u952e\u5b57\u7684\u4f5c\u7528\uff1a\uff081\uff09\u51fd\u6570\u4f53\u5185static\u53d8\u91cf\u7684\u4f5c\u7528\u8303\u56f4\u4e3a\u8be5\u51fd\u6570\u4f53\uff0c\u8be5\u53d8\u91cf\u7684\u5185\u5b58\u53ea\u88ab\u5206\u914d\u4e00\u6b21\uff0c\u56e0\u6b64\u5176\u503c\u5728\u4e0b\u6b21\u8c03\u7528\u65f6\u4ecd\u7ef4\u6301\u4e0a\u6b21\u7684\u503c\uff1b\uff082\uff09\u5728\u6a21\u5757\u5185\u7684static\u5168\u5c40\u53d8\u91cf\u548c\u51fd\u6570\u53ef\u4ee5\u88ab\u6a21\u5757\u5185\u7684\u51fd\u6570\u8bbf\u95ee\uff0c\u4f46\u4e0d\u80fd\u88ab\u6a21\u5757\u5916\u5176\u5b83\u51fd\u6570\u8bbf\u95ee\uff1b\uff083\uff09\u5728\u7c7b\u4e2d\u7684static\u6210\u5458\u53d8\u91cf\u5c5e\u4e8e\u6574\u4e2a\u7c7b\u6240\u62e5\u6709\uff0c\u5bf9\u7c7b\u7684\u6240\u6709\u5bf9\u8c61\u53ea\u6709\u4e00\u4efd\u62f7\u8d1d\uff1b\uff084\uff09\u5728\u7c7b\u4e2d\u7684static\u6210\u5458\u51fd\u6570\u5c5e\u4e8e\u6574\u4e2a\u7c7b\u6240\u62e5\u6709\uff0c\u8fd9\u4e2a\u51fd\u6570\u4e0d\u63a5\u6536this\u6307\u9488\uff0c\u56e0\u800c\u53ea\u80fd\u8bbf\u95ee\u7c7b\u7684static\u6210\u5458\u53d8\u91cf\u3002<\/p>\n

const\u5173\u952e\u5b57\u7684\u4f5c\u7528\uff1a\uff081\uff09\u963b\u6b62\u4e00\u4e2a\u53d8\u91cf\u88ab\u6539\u53d8\uff082\uff09\u58f0\u660e\u5e38\u91cf\u6307\u9488\u548c\u6307\u9488\u5e38\u91cf\uff083\uff09const\u4fee\u9970\u5f62\u53c2\uff0c\u8868\u660e\u5b83\u662f\u4e00\u4e2a\u8f93\u5165\u53c2\u6570\uff0c\u5728\u51fd\u6570\u5185\u90e8\u4e0d\u80fd\u6539\u53d8\u5176\u503c\uff084\uff09\u5bf9\u4e8e\u7c7b\u7684\u6210\u5458\u51fd\u6570\uff0c\u82e5\u6307\u5b9a\u5176\u4e3aconst\u7c7b\u578b\uff0c\u5219\u8868\u660e\u5176\u662f\u4e00\u4e2a\u5e38\u51fd\u6570\uff0c\u4e0d\u80fd\u4fee\u6539\u7c7b\u7684\u6210\u5458\u53d8\u91cf(const\u6210\u5458\u4e00\u822c\u5728\u6210\u5458\u521d\u59cb\u5316\u5217\u8868\u5904\u521d\u59cb\u5316)\uff085\uff09\u5bf9\u4e8e\u7c7b\u7684\u6210\u5458\u51fd\u6570\uff0c\u6709\u65f6\u5019\u5fc5\u987b\u6307\u5b9a\u5176\u8fd4\u56de\u503c\u4e3aconst\u7c7b\u578b\uff0c\u4ee5\u4f7f\u5f97\u5176\u8fd4\u56de\u503c\u4e0d\u4e3a\u201d\u5de6\u503c\u201d\u3002<\/p>\n

extern\u5173\u952e\u5b57\u7684\u4f5c\u7528\uff1a\uff081\uff09extern\u53ef\u4ee5\u7f6e\u4e8e\u53d8\u91cf\u6216\u8005\u51fd\u6570\u524d\uff0c\u4ee5\u6807\u793a\u53d8\u91cf\u6216\u8005\u51fd\u6570\u7684\u5b9a\u4e49\u5728\u522b\u7684\u6587\u4ef6\u4e2d\uff0c\u63d0\u793a\u7f16\u8bd1\u5668\u9047\u5230\u6b64\u53d8\u91cf\u548c\u51fd\u6570\u65f6\u5728\u5176\u4ed6\u6a21\u5757\u4e2d\u5bfb\u627e\u5176\u5b9a\u4e49\u3002\uff082\uff09extern ""C""\u7684\u4f5c\u7528\u662f\u8ba9 C++ \u7f16\u8bd1\u5668\u5c06extern ""C""\u58f0\u660e\u7684\u4ee3\u7801\u5f53\u4f5c C \u8bed\u8a00\u4ee3\u7801\u5904\u7406\uff0c\u53ef\u4ee5\u907f\u514d C++ \u56e0\u7b26\u53f7\u4fee\u9970\u5bfc\u81f4\u4ee3\u7801\u4e0d\u80fd\u548cC\u8bed\u8a00\u5e93\u4e2d\u7684\u7b26\u53f7\u8fdb\u884c\u94fe\u63a5\u3002<\/p>\n

<pre><code> "“`
\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"

“`” static\u548cconst\u7684\u4f5c\u7528\u5728\u63cf\u8ff0\u65f6\u4e3b\u8981\u4ece\u7c7b\u5185\u548c\u7c7b\u5916\u4e24\u4e2a\u65b9\u9762\u53bb\u8bb2\uff1a stat […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-40731","post","type-post","status-publish","format-standard","hentry","category-c"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/40731","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=40731"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/40731\/revisions"}],"predecessor-version":[{"id":40732,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/40731\/revisions\/40732"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=40731"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=40731"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=40731"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}