📄 if.html
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head> <meta name="generator" content= "HTML Tidy for Linux/x86 (vers 1 September 2005), see www.w3.org"> <title>if</title> <link href="../cppreference.css" rel="stylesheet" type="text/css"></head><body><table> <tr> <td> <div class="body-content"> <div class="header-box"> <a href="../index.html">cppreference.com</a> > <a href= "index.html">C/C++ Keywords</a> > <a href="if.html">if</a> </div> <div class="name-format"> if </div> <div class="syntax-name-format"> Syntax: </div> <pre class="syntax-box"> if( conditionA ) { statement-listA; } else if( conditionB ) { statement-listB; } ... else { statement-listN; }</pre> <p>The if construct is a branching mechanism that allows different code to execute under different conditions. The conditions are evaluated in order, and the statement-list of the first condition to evaluate to true is executed. If no conditions evaluate to true and an <a href="else.html">else</a> statement is present, then the statement list within the else block will be executed. All of the <a href="else.html">else</a> blocks are optional.</p> <div class="related-name-format"> Related topics: </div> <div class="related-content"> <a href="else.html">else</a><br> <a href="for.html">for</a><br> <a href="switch.html">switch</a><br> <a href="while.html">while</a> </div> </div> </td> </tr> </table></body></html>⌨️ 快捷键说明
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