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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>rand</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> &gt; <a href=    "index.html">Other Standard C Functions</a> &gt; <a href=    "rand.html">rand</a>  </div>  <div class="name-format">    rand  </div>  <div class="syntax-name-format">    Syntax:  </div>  <pre class="syntax-box">  #include &lt;stdlib.h&gt;  int rand( void );</pre>  <p>The function rand() returns a pseudorandom integer between zero  and RAND_MAX. An example:</p>  <pre class="example-code">   srand( time(<strong>NULL</strong>) );   for( i = 0; i &lt; 10; i++ )     printf( &quot;Random number #%d: %d\n&quot;, i, rand() );          </pre>  <div class="related-name-format">    Related topics:  </div>  <div class="related-content">    <a href="srand.html">srand</a>  </div>  </div>  </td>    </tr>  </table></body></html>

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