📄 clock.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>clock</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">Standard C Date & Time</a> > <a href= "clock.html">clock</a> </div> <div class="name-format"> clock </div> <div class="syntax-name-format"> Syntax: </div> <pre class="syntax-box"> #include <time.h> clock_t clock( void );</pre> <p>The clock() function returns the processor time since the program started, or -1 if that information is unavailable. To convert the return value to seconds, divide it by CLOCKS_PER_SEC. (Note: if your compiler is POSIX compliant, then CLOCKS_PER_SEC is always defined as 1000000.)</p> <div class="related-name-format"> Related topics: </div> <div class="related-content"> <a href="asctime.html">asctime</a><br> <a href="ctime.html">ctime</a><br> <a href="time.html">time</a> </div> </div> </td> </tr> </table></body></html>⌨️ 快捷键说明
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