{"id":203821,"date":"2025-05-22T11:11:49","date_gmt":"2025-05-22T03:11:49","guid":{"rendered":"https:\/\/server.hk\/cnblog\/203821\/"},"modified":"2025-05-22T11:11:49","modified_gmt":"2025-05-22T03:11:49","slug":"i%e6%93%8d%e4%bd%9c%e6%98%af%e5%8e%9f%e5%ad%90%e6%93%8d%e4%bd%9c%e5%90%97%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/203821\/","title":{"rendered":"i++\u64cd\u4f5c\u662f\u539f\u5b50\u64cd\u4f5c\u5417\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

i++\u64cd\u4f5c\u662f\u539f\u5b50\u64cd\u4f5c\u5417\uff1f<\/h1>\n

\u4eb2\u7231\u7684\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5982\u679c\u4f60\u70b9\u5f00\u4e86\u8fd9\u7bc7\u6587\u7ae0\uff0c\u8bf4\u660e\u4f60\u5bf9\u300ai++\u64cd\u4f5c\u662f\u539f\u5b50\u64cd\u4f5c\u5417\uff1f\u300b\u5f88\u611f\u5174\u8da3\u3002\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u7ed9\u5927\u5bb6\u8be6\u7ec6\u89e3\u6790\u4e00\u4e0b\uff0c\u4e3b\u8981\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u6240\u6709\u8ba4\u771f\u8bfb\u5b8c\u7684\u7ae5\u978b\u4eec\uff0c\u90fd\u6709\u5b9e\u8d28\u6027\u7684\u63d0\u9ad8\u3002<\/p>\n

<\/p>\n

i++\u64cd\u4f5c\u7684\u672c\u8d28<\/strong><\/p>\n

\u798f\u5927\u5927\u67b6\u6784\u5e08\u6bcf\u65e5\u4e00\u9898\uff1a2020-12-10<\/p>\n

\u95ee\u9898\uff1a<\/strong> i++\u64cd\u4f5c\u662f\u539f\u5b50\u64cd\u4f5c\u5417\uff1f<\/p>\n

\u6df1\u5165\u89e3\u7b54\uff1a<\/strong><\/p>\n

\u4e0d\uff0ci++\u4e0d\u662f\u539f\u5b50\u64cd\u4f5c\u3002\u5c3d\u7ba1\u5b83\u770b\u8d77\u6765\u50cf\u662f\u4e00\u4e2a\u5355\u4e00\u7684\u8bed\u53e5\uff0c\u4f46\u5b9e\u9645\u4e0a\u5b83\u88ab\u7f16\u8bd1\u6210\u4e09\u4e2a\u4e0d\u540c\u7684\u52a8\u4f5c\uff0c\u5373\uff1a<\/p>\n

    \n
  1. \u53d6i\u7684\u5f53\u524d\u503c<\/li>\n
  2. \u5c06\u5176\u52a01<\/li>\n
  3. \u5c06\u65b0\u7684\u503c\u91cd\u65b0\u8d4b\u503c\u7ed9i<\/li>\n<\/ol>\n

    \u8fd9\u4e2a\u8fc7\u7a0b\u4e0d\u662f\u539f\u5b50\u7684\uff0c\u8fd9\u610f\u5473\u7740\u5728\u6267\u884c\u671f\u95f4\uff0ci\u7684\u503c\u6709\u53ef\u80fd\u53d1\u751f\u53d8\u5316\u3002\u4f8b\u5982\uff0c\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e2d\uff0c\u5176\u4ed6\u7ebf\u7a0b\u53ef\u80fd\u4f1a\u5728i++\u64cd\u4f5c\u5b8c\u6210\u524d\u4fee\u6539i\u7684\u503c\u3002<\/p>\n

    \u539f\u56e0\uff1a<\/strong><\/p>\n

    i++\u64cd\u4f5c\u4f7f\u7528\u590d\u5408\u8d4b\u503c\u8fd0\u7b97\u7b26+=\uff0c\u5b83\u4e0d\u662f\u539f\u5b50\u64cd\u4f5c\u3002\u4e3a\u4e86\u5b9e\u73b0\u539f\u5b50\u6027\uff0c\u9700\u8981\u4f7f\u7528\u5176\u4ed6\u673a\u5236\uff0c\u4f8b\u5982\u9501\u6216\u539f\u5b50\u64cd\u4f5c\u51fd\u6570\uff08\u4f8b\u5982__sync_fetch_and_add\uff09\u3002<\/p>\n

    \u5230\u8fd9\u91cc\uff0c\u6211\u4eec\u4e5f\u5c31\u8bb2\u5b8c\u4e86\u300ai++\u64cd\u4f5c\u662f\u539f\u5b50\u64cd\u4f5c\u5417\uff1f\u300b\u7684\u5185\u5bb9\u4e86\u3002\u4e2a\u4eba\u8ba4\u4e3a\uff0c\u57fa\u7840\u77e5\u8bc6\u7684\u5b66\u4e60\u548c\u5de9\u56fa\uff0c\u662f\u4e3a\u4e86\u66f4\u597d\u7684\u5c06\u5176\u8fd0\u7528\u5230\u9879\u76ee\u4e2d\uff0c\u6b22\u8fce\u5173\u6ce8\u516c\u4f17\u53f7\uff0c\u5e26\u4f60\u4e86\u89e3\u66f4\u591a\u5173\u4e8e\u7684\u77e5\u8bc6\u70b9\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"

    i++\u64cd\u4f5c\u662f\u539f\u5b50\u64cd\u4f5c\u5417\uff1f \u4eb2\u7231\u7684...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-203821","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203821","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=203821"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/203821\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=203821"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=203821"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=203821"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}