{"id":289,"date":"2023-01-05T20:22:59","date_gmt":"2023-01-05T12:22:59","guid":{"rendered":"https:\/\/9iwd.top\/?p=289"},"modified":"2023-01-10T10:58:24","modified_gmt":"2023-01-10T02:58:24","slug":"02-2-sizeof%e5%85%b3%e9%94%ae%e5%ad%97","status":"publish","type":"post","link":"http:\/\/9iwd.top\/?p=289","title":{"rendered":"02.2 C++sizeof\u5173\u952e\u5b57"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code>#include &lt;iostream>\/\/ \u8f93\u51fa\u6d41\u5e93\r\nusing namespace std;\/\/\u4f7f\u7528\u6807\u51c6\u547d\u540d\u7a7a\u95f4\r\n\r\n\/\/\u8bfe\u7a0b\uff1a2.2 sizeof()\u5173\u952e\u5b57\u4f7f\u7528\u65b9\u5f0f\r\n\/*\r\n\u6574\u5f62\uff1ashort(2),int(4),long(4),long long(8)\r\n\u53ef\u4ee5\u5229\u7528sizeof\u6c42\u51fa\u6570\u636e\u7c7b\u578b\u5360\u7528\u5185\u5b58\u5927\u5c0f\r\n\u8bed\u6cd5\uff1asizeof(\u6570\u636e\u7c7b\u578b\/\u53d8\u91cf)\r\n*\/\r\n\r\nint main()\r\n{\r\n\tshort num1 = 10;\r\n\tcout &lt;&lt; \"short\u5360\u7528\u5185\u5b58\u7a7a\u95f4\u4e3a\uff1a\" &lt;&lt; sizeof(short) &lt;&lt; endl;\r\n\r\n\tint num2 = 10;\r\n\tcout &lt;&lt; \"int\u5360\u7528\u5185\u5b58\u7a7a\u95f4\u4e3a\uff1a\" &lt;&lt; sizeof(int) &lt;&lt; endl;\r\n\r\n\tlong num3 = 10;\r\n\tcout &lt;&lt; \"long\u5360\u7528\u5185\u5b58\u7a7a\u95f4\u4e3a\uff1a\" &lt;&lt; sizeof(long) &lt;&lt; endl;\r\n\r\n\tlong long num4 = 10;\r\n\tcout &lt;&lt; \"long long\u5360\u7528\u5185\u5b58\u7a7a\u95f4\u4e3a\uff1a\" &lt;&lt; sizeof(long long) &lt;&lt; endl;\r\n\r\n\t\/\/short &lt; int &lt;= long &lt;= long long\r\n\r\n\tsystem(\"pause\");\/\/ \u63a7\u5236\u53f0\u6682\u505c\uff0c\u7b49\u5f85\u4e0b\u4e00\u6b65\u64cd\u4f5c\r\n\treturn 0;\/\/ \u7ed3\u675f\u8fd4\u56de\u503c\uff1a0\r\n}\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[],"_links":{"self":[{"href":"http:\/\/9iwd.top\/index.php?rest_route=\/wp\/v2\/posts\/289"}],"collection":[{"href":"http:\/\/9iwd.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/9iwd.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/9iwd.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/9iwd.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=289"}],"version-history":[{"count":0,"href":"http:\/\/9iwd.top\/index.php?rest_route=\/wp\/v2\/posts\/289\/revisions"}],"wp:attachment":[{"href":"http:\/\/9iwd.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=289"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/9iwd.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=289"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/9iwd.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=289"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}