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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>srand</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">Other Standard C Functions</a> > <a href= "srand.html">srand</a> </div> <div class="name-format"> srand </div> <div class="syntax-name-format"> Syntax: </div> <pre class="syntax-box"> #include <stdlib.h> void srand( unsigned seed );</pre> <p>The function srand() is used to seed the random sequence generated by <a href="rand.html">rand</a>(). For any given <em>seed</em>, rand() will generate a specific "random" sequence over and over again.</p> <pre class="example-code"> srand( time(<strong>NULL</strong>) ); for( i = 0; i < 10; i++ ) printf( "Random number #%d: %d\n", i, rand() ); </pre> <div class="related-name-format"> Related topics: </div> <div class="related-content"> <a href="rand.html">rand</a><br> (Standard C Date & Time) <a href= "../stddate/time.html">time</a> </div> </div> </td> </tr> </table></body></html>⌨️ 快捷键说明
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