{"id":40733,"date":"2023-12-11T14:51:30","date_gmt":"2023-12-11T06:51:30","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=40733"},"modified":"2023-12-11T14:51:30","modified_gmt":"2023-12-11T06:51:30","slug":"sizeof%e5%92%8cstrlen%e7%9a%84%e5%8c%ba%e5%88%ab%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/11\/sizeof%e5%92%8cstrlen%e7%9a%84%e5%8c%ba%e5%88%ab%ef%bc%9f\/","title":{"rendered":"sizeof\u548cstrlen\u7684\u533a\u522b\uff1f"},"content":{"rendered":"<p>&#8220;`&#8221;                    \uff081\uff09sizeof\u662f\u8fd0\u7b97\u7b26\uff0c\u800cstrlen\u662f\u51fd\u6570\uff1b\uff082\uff09sizeof\u7684\u7528\u6cd5\u662fsizeof(\u53c2\u6570)\uff0c\u8fd9\u4e2a\u53c2\u6570\u53ef\u4ee5\u662f\u6570\u7ec4\uff0c\u6307\u9488\uff0c\u7c7b\u578b\uff0c\u5bf9\u8c61\uff0c\u751a\u81f3\u662f\u51fd\u6570\uff0c\u5176\u503c\u5728\u7f16\u8bd1\u7684\u65f6\u5019\u5c31\u8ba1\u7b97\u597d\u4e86\uff0c\u800cstrlen\u7684\u53c2\u6570\u5fc5\u987b\u662f\u5b57\u7b26\u578b\u6307\u9488\uff08char*\uff09,\u5176\u503c\u5fc5\u987b\u5728\u51fd\u6570\u8fd0\u884c\u7684\u65f6\u5019\u624d\u80fd\u8ba1\u7b97\u51fa\u6765\uff1b\uff083\uff09 sizeof\u7684\u529f\u80fd\u662f\u83b7\u5f97\u4fdd\u8bc1\u80fd\u5bb9\u7eb3\u5b9e\u73b0\u7684\u5efa\u7acb\u7684\u6700\u5927\u5bf9\u8c61\u7684\u5b57\u8282\u7684\u5927\u5c0f\uff0c\u800cstrlen\u7684\u529f\u80fd\u662f\u8fd4\u56de\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\uff0c\u5207\u8bb0\u8fd9\u91cc\u7684\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\u662f\u5305\u62ec\u7ed3\u675f\u7b26\u7684\uff1b\uff084\uff09\u5f53\u6570\u7ec4\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9\u51fd\u6570\u7684\u65f6\u5019\uff0c\u4f20\u7684\u662f\u6307\u9488\uff0c\u800c\u4e0d\u662f\u6570\u7ec4\uff0c\u4f20\u9012\u6570\u7ec4\u7684\u9996\u5730\u5740\uff1b<\/p>\n<p>char str[20] = &quot;&quot;0123456789&quot;&quot;;int a = strlen(str);  \/\/10int b = sizeof(str);\/\/20123<\/p>\n<p>&lt;pre&gt;&lt;code&gt;            &quot;&#8220;`<br \/>\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>&#8220;`&#8221; \uff081\uff09sizeof\u662f\u8fd0\u7b97\u7b26\uff0c\u800cstrlen\u662f\u51fd\u6570\uff1b\uff082\uff09sizeof\u7684\u7528\u6cd5\u662fs [&hellip;]<\/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-40733","post","type-post","status-publish","format-standard","hentry","category-c"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/40733","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=40733"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/40733\/revisions"}],"predecessor-version":[{"id":40734,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/40733\/revisions\/40734"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=40733"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=40733"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=40733"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}