{"id":395,"date":"2015-04-12T15:21:56","date_gmt":"2015-04-12T07:21:56","guid":{"rendered":"http:\/\/yangwang.hk\/?p=395"},"modified":"2015-09-13T10:49:28","modified_gmt":"2015-09-13T02:49:28","slug":"3-1%e3%80%81%e8%ae%a9%e7%a8%8b%e5%ba%8f%e6%8b%90%e5%bc%af%e7%9a%84if","status":"publish","type":"post","link":"https:\/\/yangwang.hk\/?p=395","title":{"rendered":"3.1\u3001\u8ba9\u7a0b\u5e8f\u62d0\u5f2f\u7684if"},"content":{"rendered":"<p>\u7ec8\u4e8e\u6765\u5230\u4e86\u4e0b\u4e00\u7ae0\u2026\u2026<\/p>\n<p>\u672c\u8282\u7684\u5185\u5bb9\u4f1a\u8ba9\u4f60\u771f\u6b63\u9886\u7565\u5230\u7f16\u7a0b\u7684\u9b45\u529b<\/p>\n<p>\u4f60\u6709\u6ca1\u6709\u53d1\u73b0\uff0c\u524d\u9762\u6211\u4eec\u7684\u7a0b\u5e8f\u90fd\u662f\u4ecemain\u51fd\u6570\u7684\u7b2c\u4e00\u884c\u5f00\u59cb\uff0c\u4e00\u76f4\u5230main\u51fd\u6570\u7684\u6700\u540e\u4e00\u884c\u4e3a\u6b62\uff0c\u8bed\u53e5\u662f\u4e00\u6761\u6761\u987a\u7740\u6267\u884c\u7684\u3002<\/p>\n<p>\u8fd9\u79cd\u7a0b\u5e8f\u7684\u7ed3\u6784\u53eb\u505a\u987a\u5e8f\u7ed3\u6784\u3002<\/p>\n<p>\u987a\u5e8f\u7ed3\u6784\u4e2d\u7684\u8bed\u53e5\u987a\u5e8f\u662f\u5728\u7f16\u7a0b\u7684\u65f6\u5019\u5c31\u786e\u5b9a\u4e86\u7684<\/p>\n<p>\u4f46\u662f\u5149\u6709\u987a\u5e8f\u7ed3\u6784\u53ef\u4e0d\u884c\uff0c\u5c31\u50cf\u6211\u4eec\u8d70\u8def\u4e00\u6837\uff0c\u5982\u679c\u524d\u9762\u662f\u60ac\u5d16\uff0c\u4f60\u8fd8\u4e0d\u8f6c\u5f2f\u7684\u8bdd\uff0c\u6211\u53ea\u80fd\u8bf4\uff1a\u201c\u4f60\u725b\uff01\u201d\u3002<\/p>\n<p>\u7a0b\u5e8f\u4e2d\u4e5f\u662f\u5982\u6b64\uff0c\u6709\u7684\u65f6\u5019\u6211\u4eec\u5728\u7f16\u7a0b\u7684\u65f6\u4e0d\u80fd\u786e\u5b9a\u8bed\u53e5\u7684\u6267\u884c\u987a\u5e8f\uff08\u5b9e\u9645\u4e0a\u662f\u5927\u90e8\u5206\u65f6\u5019\uff09\uff0c\u6211\u4eec\u9700\u8981\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u6765\u6539\u53d8\u6211\u4eec\u7684\u7a0b\u5e8f\u8fd0\u884c\u65b9\u5411<\/p>\n<p>\u4e5f\u5c31\u662f\u8ba9\u7a0b\u5e8f\u62d0\u5f2f<\/p>\n<p>\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0cif\u5c31\u6392\u4e0a\u7528\u573a\u4e86<\/p>\n<p>\u9996\u5148\u6211\u4eec\u6765\u770b\u4e00\u6bb5\u7a0b\u5e8f<\/p>\n<pre class=\"brush: cpp; title: ; notranslate\" title=\"\">\r\n#include &lt;stdio.h&gt;\r\n#include &lt;stdlib.h&gt;\r\n\r\nint main()\r\n{\r\nint input;\r\nprintf(&quot;\u8bf7\u8f93\u5165\u4e00\u4e2a\u6570\u5b57\\n&quot;);\r\nscanf(&quot;%d&quot;, &amp;amp;input);\r\n\r\nprintf(&quot;\\n\u4f60\u8f93\u5165\u7684\u662f\uff1a%d &quot;, input);\r\nif (input &amp;gt; 0)\r\n{\r\nprintf(&quot;\u4ed6\u662f\u4e00\u4e2a\u6b63\u6570&quot;);\r\n}\r\n\r\nif (input &amp;lt;0)\r\n{\r\nprintf(&quot;\u4ed6\u662f\u4e00\u4e2a\u8d1f\u6570&quot;);\r\n}\r\n\r\nif (input == 0)\r\n{\r\nprintf(&quot;\u4ed6\u662f0&quot;);\r\n}\r\n\r\nreturn 0;\r\n}\r\n<\/pre>\n<p>\u5982\u679c\u4f60\u8ddf\u7740\u7a0b\u5e8f\u7684\u63d0\u793a\u505a\uff0c\u8f93\u5165\u4e86\u4e00\u4e2a\u6570\u5b57\u7684\u8bdd<\/p>\n<p>\u7a0b\u5e8f\u5c06\u5224\u65ad\u4f60\u8f93\u5165\u7684\u6570\u5b57\u662f\u6b63\u6570\uff0c\u8d1f\u6570\u8fd8\u662f0<\/p>\n<p>\u5728\u7f16\u7a0b\u65f6\uff0c\u6211\u6839\u672c\u65e0\u6cd5\u9884\u77e5\u4f60\u7684\u8f93\u5165\u662f\u6b63\u6570\u8fd8\u662f\u4ec0\u4e48\u5176\u4ed6\u7684\u4e71\u4e03\u516b\u7cdf\u7684\u503c<\/p>\n<p>\u4f46\u662f\u6211\u53ef\u4ee5\u4f7f\u7528if\u8bed\u53e5\u6765\u5224\u65ad\u4f60\u7684\u8f93\u5165\u4fe1\u606f\uff0c\u5e76\u4e14\u6839\u636e\u5b9e\u9645\u60c5\u51b5\u505a\u51fa\u76f8\u5e94\u7684\u8c03\u6574<\/p>\n<p>if\u662f\u4e00\u4e2a\u5173\u952e\u5b57\uff0c\u5b83\u7684\u540e\u9762\u8fd8\u8ddf\u7740\u4e00\u5bf9\u62ec\u53f7<\/p>\n<p>\u62ec\u53f7\u91cc\u9762\u7684\u5185\u5bb9\u53eb\u505a\u5224\u65ad\u6761\u4ef6<\/p>\n<p><span style=\"color: #ff0000;\"><strong>\u6ce8\u610f\uff0cif\u7684\u62ec\u53f7\u540e\u9762\u6ca1\u6709\u5206\u53f7;<\/strong><\/span><\/p>\n<p><em><strong>if ( xxx )<\/strong><\/em><\/p>\n<p>if\u7684\u540e\u9762\u5219\u662f\u4e00\u5bf9\u5927\u62ec\u53f7<\/p>\n<p>\u7528\u5927\u62ec\u53f7\u62ec\u8d77\u6765\u7684\u5185\u5bb9\u65f6\u4ee3\u7801\u5757<\/p>\n<p>\u5927\u62ec\u53f7\u6807\u660e\u4e86if\u8bed\u53e5\u7684\u4f5c\u7528\u8303\u56f4<\/p>\n<p>\u4e00\u4e2a\u57fa\u672c\u7684if\u683c\u5f0f\u5e94\u8be5\u4e3a<\/p>\n<p>if( \u8868\u8fbe\u5f0f )<\/p>\n<p>{<\/p>\n<p>\u4ee3\u7801<\/p>\n<p>}<\/p>\n<p>\u5982\u679c\u8868\u8fbe\u5f0f\u7684\u503c\u4e3a\u201c\u771f\u201d\uff0c\u90a3\u4e48\u5c06\u6267\u884cif\u540e\u9762\u5927\u62ec\u53f7\u4e2d\u7684\u8bed\u53e5<\/p>\n<p>\u5426\u5219\uff0c\u7a0b\u5e8f\u5c06\u76f4\u63a5\u8df3\u8fc7\u5927\u62ec\u53f7\u4e2d\u7684\u4ee3\u7801\uff0c\u6267\u884c\u540e\u9762\u7684\u4ee3\u7801<\/p>\n<p>\u4e8e\u662f\u4e4e\uff0c\u6211\u4eec\u5c31\u9700\u8981\u77e5\u9053\u4ec0\u4e48\u662f\u201c\u771f\u201d\u4ec0\u4e48\u662f\u201c\u5047\u201d\u4e86<\/p>\n<h3>\u201c\u771f\u201d\u4e0e\u201c\u5047\u201d<\/h3>\n<p>\u56e0\u4e3a\u8ba1\u7b97\u673a\u4e2d\u4f7f\u7528\u7684\u662f\u4e8c\u8fdb\u5236\uff0c\u56e0\u6b64\u5c31\u53ea\u5b58\u5728\u4e24\u79cd\u72b6\u6001\uff08\u6bd4\u5982\u9ad8\u7535\u5e73\u548c\u4f4e\u7535\u5e73\uff09<\/p>\n<p>\u771f\u662f\u4e00\u79cd\u72b6\u6001\uff0c\u5047\u5c31\u662f\u53e6\u4e00\u79cd\u72b6\u6001<\/p>\n<p>\u73b0\u5b9e\u751f\u6d3b\u4e2d\uff0c\u6211\u4eec\u6240\u8bf4\u7684\u201c\u771f\u201d\u662f\u6307\u4e0e\u5ba2\u89c2\u4e8b\u5b9e\u76f8\u7b26\u5408\uff0c\u5047\u5219\u4e0e\u5176\u76f8\u53cd\u3002<\/p>\n<p>\u8ba1\u7b97\u673a\u4e2d\uff0c\u4eba\u4eec\u5219\u89c4\u5b9a\uff0c<span style=\"color: #ff0000;\"><strong>0\u662f\u5047\uff0c\u6240\u6709\u975e0\u7684\u6570\u90fd\u662f\u771f<\/strong><\/span><\/p>\n<p>\u5207\u8bb0\uff0c\u771f\u662f\u6240\u6709\u975e0\u7684\u6570\uff0c\u56e0\u6b64\u4e0d\u7ba1\u662f1\u4e5f\u597d\uff0c1024\uff0c\u751a\u81f3\u662f-3.14159\uff0c\u4ed6\u4eec\u90fd\u662f\u201c\u771f\u201d\uff01<\/p>\n<p>\u5f53if\u62ec\u53f7\u5185\u7684\u8868\u8fbe\u5f0f\u7684\u503c\u4e3a0\u65f6\uff08\u5c31\u662f\u5047\u65f6\uff09\uff0cif\u540e\u5927\u62ec\u53f7\u5185\u7684\u4ee3\u7801\u5c06\u4e0d\u4f1a\u88ab\u6267\u884c<\/p>\n<p>\u8ba1\u7b97\u673a\u4f1a\u76f4\u63a5\u8df3\u5230if\u7684\u540e\u9762\u8bed\u53e5\u8fdb\u884c\u6267\u884c<a href=\"http:\/\/yangwang.hk\/wp-content\/uploads\/2015\/04\/123.bmp\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-400\" src=\"http:\/\/yangwang.hk\/wp-content\/uploads\/2015\/04\/123.bmp\" alt=\"123\" width=\"512\" height=\"384\" \/><\/a><\/p>\n<p>\u73b0\u5728\u6211\u4eec\u5c31\u53ef\u4ee5\u5c1d\u8bd5\u6765\u7406\u89e3\u5f00\u5934\u5904\u7684\u4f8b\u5b50\u7a0b\u5e8f\u4e86<\/p>\n<p>\u7a0b\u5e8f\u7684\u524d10\u884c\uff0c\u4f60\u5e94\u8be5\u80fd\u591f\u7406\u89e3\uff08\u5426\u5219\u4f60\u5e94\u8be5\u8003\u8651\u4e00\u4e0b\u662f\u5426\u9700\u8981\u91cd\u65b0\u5b66\u4e60\u524d\u9762\u7684\u5185\u5bb9\uff09<\/p>\n<p>\u7b2c11\u884c\u662f\u4e00\u4e2aif\uff0c\u5c0f\u62ec\u53f7\u5185\u7684\u5185\u5bb9\u662finput &gt; 0<\/p>\n<p>\u4e2d\u95f4\u7684&gt;\uff08\u5927\u4e8e\u53f7\uff09\u548c\u5728\u6570\u5b66\u4e2d\u7684\u542b\u4e49\u76f8\u4f3c\uff0c\u4e0d\u8fc7\u5b83\u7528\u6765\u5224\u65ad\u5927\u4e8e\u53f7\u5de6\u8fb9\u7684\u503c\u662f\u5426\u5927\u4e8e\u53f3\u8fb9\u7684\u503c<\/p>\n<p>\u5982\u679c\u8fd9\u4e2a\u5224\u65ad\u6210\u7acb\uff0c\u90a3\u4e48\u8fd9\u4e2a\u8868\u8fbe\u5f0f\u5c06\u8fd4\u56de\u771f\uff08\u901a\u5e38\u6765\u8bf4\uff0c\u8fd9\u4e2a\u503c\u662f1\uff09\uff0c\u5426\u5219\u5c06\u8fd4\u56de\u5047\uff08\u901a\u5e38\u662f0\uff09<\/p>\n<p>\u4e5f\u5c31\u662f\u8bf4\u5982\u679c\u6211\u4eec\u8f93\u5165\u6570\u5b575 \u7684\u8bdd\uff0c5\u5728\u5927\u4e8e\u53f7\u7684\u5de6\u8fb9\uff0c\u663e\u7136\u5b83\u662f\u5927\u4e8e\u53f3\u8fb9\u76840\u7684<\/p>\n<p>\u8fd9\u4e2a\u8868\u8fbe\u5f0f\u7684\u503c\u4fbf\u4e3a\u201c\u771f\u201d\uff0c\u4e8e\u662f\u4e4e\uff0c\u8fd9\u4e00\u4e2aif\u8bed\u53e5\u4e2d\u7684<\/p>\n<pre class=\"brush: cpp; title: ; notranslate\" title=\"\">printf(&quot;\u4ed6\u662f\u4e00\u4e2a\u6b63\u6570&quot;);<\/pre>\n<p>\u5c06\u88ab\u6267\u884c\uff0c\u8fd9\u6837\u4f60\u5c31\u80fd\u5728\u5c4f\u5e55\u4e0a\u770b\u5230\u6253\u5370\u51fa\u6765\u7684\u201c\u4ed6\u662f\u4e00\u4e2a\u6b63\u6570\u201d<\/p>\n<p>\u7b2c\u5341\u4e09\u884c\u8bed\u53e5\u6267\u884c\u5b8c\u540e\uff0c\u5c06\u6765\u523016\u884c\u7684\u7b2c\u4e8c\u4e2aif<\/p>\n<p>\u6761\u4ef6\u662finput&lt;0<\/p>\n<p>input\u662f5\uff0c\u53c2\u8003\u4e0a\u9762\u7684\u5927\u4e8e\u53f7<\/p>\n<p>\u8fd9\u4e2a\u8868\u8fbe\u5f0f\u7684\u503c\u663e\u7136\u662f\u5047\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u7b2c\u4e8c\u4e2aif\u7684printf\u8bed\u53e5\u4e0d\u4f1a\u6267\u884c<\/p>\n<p>\u7a0b\u5e8f\u4f1a\u76f4\u63a5\u8df3\u5230\u4e0b\u9762\u768421\u884c\u7684\u7b2c\u4e09\u4e2aif<\/p>\n<p>\u8fd9\u6b21\u7684\u8868\u8fbe\u5f0f\u53d8\u6210\u4e86input == 0<\/p>\n<p>\u8fd9\u4e00\u4e0b\u5c31\u6709\u4eba\u641e\u4e0d\u6e05\u695a\u4e86\u3010=\u6211\u77e5\u9053\uff0c\u53ef\u662f==\u662f\u6bdb\u7ebf\u4e1c\u897f\u3011<\/p>\n<p>\u5443\uff0c\u8fd9\u4e2a==\u561b\uff0c\u5176\u5b9e\u548c\u6570\u5b66\u4e2d\u7684=\u5dee\u4e0d\u591a\u5566<\/p>\n<p><span style=\"color: #ff0000;\">\u6ce8\u610f\uff0c\u662f\u5dee\u4e0d\u591a\uff0c\u4e0d\u662f\u76f8\u540c\uff01<\/span><\/p>\n<p>==\u5c31\u662f\u5224\u65ad\u5de6\u53f3\u4e24\u8fb9\u662f\u5426\u76f8\u7b49\uff0c\u76f8\u7b49\u5c31\u8fd4\u56de\u771f\uff0c\u4e0d\u76f8\u7b49\u5219\u8fd4\u56de\u5047<\/p>\n<p>\u663e\u7136\uff0c\u8fd9\u4e2aif\u4e5f\u8fd4\u56de\u5047<\/p>\n<p>\u7136\u540e\u7a0b\u5e8f\u5c31\u5230\u4e86return\u4e86\uff0c\u5230\u6b64\u7a0b\u5e8f\u7ed3\u675f<\/p>\n<p>&nbsp;<\/p>\n<p>\u8fd9\u4fbf\u662f\u7a0b\u5e8f\u80fd\u591f\u5224\u65ad\u8f93\u5165\u7684\u6570\u5b57\u662f\u6b63\u6570\u3001\u8d1f\u6570\u8fd8\u662f0\u7684\u539f\u56e0<\/p>\n<p>\u8bf7\u8bd5\u7740\u5206\u6790\u8f93\u5165\u4e3a-1\uff0c\u4ee5\u53ca\u4e3a0\u7684\u60c5\u51b5<\/p>\n<hr \/>\n<h3>\u5173\u7cfb\u8fd0\u7b97\u7b26<\/h3>\n<p>\u6700\u540e\u6211\u4eec\u6765\u4ecb\u7ecd\u4e00\u4e0b\u5173\u7cfb\u8fd0\u7b97\u7b26<\/p>\n<p>\u987e\u540d\u601d\u4e49\uff0c\u8fd9\u662f\u4ed6\u5c5e\u4e8e\u8fd0\u7b97\u7b26\u7684\u4e00\u7c7b<\/p>\n<p>\u4ec0\u4e48\u662f\u8fd0\u7b97\u7b26\u5462\uff0c\u5c31\u662f\u4e00\u79cd\u8868\u793a\u8fd0\u7b97\u5173\u7cfb\u7684\u7b26\u53f7\uff0c\u6bd4\u5982+-*\/<\/p>\n<p>\u800c\u5173\u7cfb\u8fd0\u7b97\u7b26\uff0c\u5219\u662f\u7528\u6765\u8ba1\u7b97\u5173\u7cfb\u7684<\/p>\n<p>C\u8bed\u8a00\u4e00\u5171\u63d0\u4f9b\u4e866\u4e2a\u5173\u7cfb\u8fd0\u7b97\u7b26<\/p>\n<p>\u4ed6\u4eec\u662f\uff1a<\/p>\n<table class=\"table-view log-set-param\">\n<tbody>\n<tr>\n<td>\n<div class=\"para\">\u8fd0\u7b97\u7b26<\/div>\n<\/td>\n<td>\n<div class=\"para\">\u540d\u79f0<\/div>\n<\/td>\n<td>\n<div class=\"para\">\u793a\u4f8b<\/div>\n<\/td>\n<td>\n<div class=\"para\">\u529f\u80fd<\/div>\n<\/td>\n<td>\n<div class=\"para\">\u7f29\u5199<\/div>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<div class=\"para\">&lt;<\/div>\n<\/td>\n<td>\n<div class=\"para\">\u5c0f\u4e8e<\/div>\n<\/td>\n<td>\n<div class=\"para\">a&lt;b<\/div>\n<\/td>\n<td>\n<div class=\"para\">a\u5c0f\u4e8eb\u65f6\u8fd4\u56de\u771f\uff1b\u5426\u5219\u8fd4\u56de\u5047<\/div>\n<\/td>\n<td>\n<div class=\"para\">LT<\/div>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<div class=\"para\">&lt;=<\/div>\n<\/td>\n<td>\n<div class=\"para\">\u5c0f\u4e8e\u7b49\u4e8e<\/div>\n<\/td>\n<td>\n<div class=\"para\">a&lt;=b<\/div>\n<\/td>\n<td>\n<div class=\"para\">a\u5c0f\u4e8e\u7b49\u4e8eb\u65f6\u8fd4\u56de\u771f\uff1b\u5426\u5219\u8fd4\u56de\u5047<\/div>\n<\/td>\n<td>\n<div class=\"para\">LE<\/div>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<div class=\"para\">&gt;<\/div>\n<\/td>\n<td>\n<div class=\"para\">\u5927\u4e8e<\/div>\n<\/td>\n<td>\n<div class=\"para\">a&gt;b<\/div>\n<\/td>\n<td>\n<div class=\"para\">a\u5927\u4e8eb\u65f6\u8fd4\u56de\u771f\uff1b\u5426\u5219\u8fd4\u56de\u5047<\/div>\n<\/td>\n<td>\n<div class=\"para\">GT<\/div>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<div class=\"para\">&gt;=<\/div>\n<\/td>\n<td>\n<div class=\"para\">\u5927\u4e8e\u7b49\u4e8e<\/div>\n<\/td>\n<td>\n<div class=\"para\">a&gt;=b<\/div>\n<\/td>\n<td>\n<div class=\"para\">a\u5927\u4e8e\u7b49\u4e8eb\u65f6\u8fd4\u56de\u771f\uff1b\u5426\u5219\u8fd4\u56de\u5047<\/div>\n<\/td>\n<td>\n<div class=\"para\">GE<\/div>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<div class=\"para\">==<\/div>\n<\/td>\n<td>\n<div class=\"para\">\u7b49\u4e8e<\/div>\n<\/td>\n<td>\n<div class=\"para\">a==b<\/div>\n<\/td>\n<td>\n<div class=\"para\">a\u7b49\u4e8eb\u65f6\u8fd4\u56de\u771f\uff1b\u5426\u5219\u8fd4\u56de\u5047<\/div>\n<\/td>\n<td>\n<div class=\"para\">EQ<\/div>\n<\/td>\n<\/tr>\n<tr>\n<td>\n<div class=\"para\">!=<\/div>\n<\/td>\n<td>\n<div class=\"para\">\u4e0d\u7b49\u4e8e<\/div>\n<\/td>\n<td>\n<div class=\"para\">a!=b<\/div>\n<\/td>\n<td>\n<div class=\"para\">a\u4e0d\u7b49\u4e8eb\u65f6\u8fd4\u56de\u771f\uff1b\u5426\u5219\u8fd4\u56de\u5047<\/div>\n<\/td>\n<td>\n<div class=\"para\">NE<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u5173\u7cfb\u8fd0\u7b97\u7b26\u7b97\u51fa\u6765\u7684\u503c\u662f1\uff08\u771f\uff09\u6216\u80050\uff08\u5047\uff09\uff08\u4f46\u662f\u4e00\u5b9a\u8981\u8bb0\u4f4f\uff0c\u6240\u6709\u975e0\u7684\u6570\u90fd\u662f\u771f\uff09<\/p>\n<p>\u8fd8\u6709\u4e00\u70b9\u9700\u8981\u5f3a\u8c03\u7684\u662f\uff0c\u5f88\u591a\u4eba\u4f1a\u628a==\u548c=\u641e\u6df7\u3002<\/p>\n<p>\u5b9e\u9645\u4e0a\u8fd9\u4e24\u4e2a\u7b26\u53f7\u7684\u533a\u522b\u662f\u7070\u5e38\u5927\u7684<\/p>\n<p>==\u662f\u7b49\u4e8e\u5224\u65ad\u7b26\uff0c\u4ed6\u5224\u65ad\u5de6\u53f3\u4e24\u8fb9\u662f\u5426\u76f8\u7b49<\/p>\n<p>\u800c=\u5728c\u8bed\u8a00\u4e2d\u5219\u662f\u8d4b\u503c\u7684\u610f\u601d\uff0c\u5982\u679c\u4e0a\u9762\u7684\u7a0b\u5e8f\u4e2d<\/p>\n<p>\u6211\u4eec\u5c06\u7b2c\u4e09\u4e2aif\u5199\u6210\u4e86if(input = 0)<\/p>\n<p>\u90a3\u4e48\u4f1a\u53d1\u751f\u4ec0\u4e48\u5462\uff1f<\/p>\n<p>\u56e0\u4e3a=\u662f\u8d4b\u503c\u7684\u610f\u601d\uff0c\u6240\u4ee5\u6267\u884c\u5230if\u65f6\uff0c\u4f1a\u5c060\u8fd9\u4e2a\u6570\u5b57\u8d4b\u503c\u7ed9input\u8fd9\u4e2a\u53d8\u91cf\uff0c\u4e5f\u5c31\u662f\u8bf4\u4e0d\u7ba1\u4f60\u8f93\u5165\u7684\u6570\u5b57\u662f\u591a\u5c11<\/p>\n<p>\u5230\u8fd9\u91cc\u90fd\u4f1a\u53d8\u62100\uff0c\u63a5\u7740\uff0c\u8fd9\u4e2a\u8868\u8fbe\u5f0f\u5c06\u8fd4\u56deinput\u7684\u503c\uff0c\u4e5f\u5c31\u662f\u521a\u521a\u8d4b\u503c\u5f97\u5230\u76840<\/p>\n<p>0\u4ee3\u8868\u5047\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u8fd9\u4e2aif\u540e\u9762\u7684\u8bed\u53e5\u4e0d\u4f1a\u88ab\u6267\u884c\u3002\u65e0\u8bba\u4f60\u8f93\u5165\u7684\u6570\u5b57\u662f\u591a\u5c11\uff0c\u8fd9\u4e2aif\u90fd\u4e0d\u4f1a\u6210\u7acb<\/p>\n<p>&nbsp;<\/p>\n<p>\u597d\u4e86\uff0c\u5bf9\u4e8eif\u7684\u7b80\u5355\u4ecb\u7ecd\u5230\u6b64\u4e3a\u6b62\uff0c\u73b0\u5728\u4f60\u9700\u8981\u7684\u662f\u7ec3\u4e60<\/p>\n<p>\u8bf7\u8bd5\u7740\u5c06\u4e0a\u9762\u7684\u7a0b\u5e8f\u6539\u5199\u5224\u65ad\u8f93\u5165\u7684\u6570\u5b57\u662f\u5426\u7b49\u4e8e0<\/p>\n<p>\u5e76\u8f93\u51fa\u76f8\u5e94\u7ed3\u679c\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7ec8\u4e8e\u6765\u5230\u4e86\u4e0b\u4e00\u7ae0\u2026\u2026 \u672c\u8282\u7684\u5185\u5bb9\u4f1a\u8ba9\u4f60\u771f\u6b63\u9886\u7565\u5230\u7f16\u7a0b\u7684\u9b45\u529b \u4f60\u6709\u6ca1\u6709\u53d1\u73b0\uff0c\u524d\u9762\u6211\u4eec\u7684\u7a0b\u5e8f\u90fd\u662f\u4ecemain\u51fd\u6570\u7684\u7b2c\u2026 <span class=\"read-more\"><a href=\"https:\/\/yangwang.hk\/?p=395\">Read More: 3.1\u3001\u8ba9\u7a0b\u5e8f\u62d0\u5f2f\u7684\u2026 &raquo;<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-395","post","type-post","status-publish","format-standard","hentry","category-c"],"views":2849,"_links":{"self":[{"href":"https:\/\/yangwang.hk\/index.php?rest_route=\/wp\/v2\/posts\/395","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yangwang.hk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yangwang.hk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yangwang.hk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yangwang.hk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=395"}],"version-history":[{"count":10,"href":"https:\/\/yangwang.hk\/index.php?rest_route=\/wp\/v2\/posts\/395\/revisions"}],"predecessor-version":[{"id":505,"href":"https:\/\/yangwang.hk\/index.php?rest_route=\/wp\/v2\/posts\/395\/revisions\/505"}],"wp:attachment":[{"href":"https:\/\/yangwang.hk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=395"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yangwang.hk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=395"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yangwang.hk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=395"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}