1<html lang="en"> 2<head> 3<title>ctime - Untitled</title> 4<meta http-equiv="Content-Type" content="text/html"> 5<meta name="description" content="Untitled"> 6<meta name="generator" content="makeinfo 4.13"> 7<link title="Top" rel="start" href="index.html#Top"> 8<link rel="up" href="Timefns.html#Timefns" title="Timefns"> 9<link rel="prev" href="clock.html#clock" title="clock"> 10<link rel="next" href="difftime.html#difftime" title="difftime"> 11<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> 12<meta http-equiv="Content-Style-Type" content="text/css"> 13<style type="text/css"><!-- 14 pre.display { font-family:inherit } 15 pre.format { font-family:inherit } 16 pre.smalldisplay { font-family:inherit; font-size:smaller } 17 pre.smallformat { font-family:inherit; font-size:smaller } 18 pre.smallexample { font-size:smaller } 19 pre.smalllisp { font-size:smaller } 20 span.sc { font-variant:small-caps } 21 span.roman { font-family:serif; font-weight:normal; } 22 span.sansserif { font-family:sans-serif; font-weight:normal; } 23--></style> 24<link rel="stylesheet" type="text/css" href="../cs.css"> 25</head> 26<body> 27<div class="node"> 28<a name="ctime"></a> 29<p> 30Next: <a rel="next" accesskey="n" href="difftime.html#difftime">difftime</a>, 31Previous: <a rel="previous" accesskey="p" href="clock.html#clock">clock</a>, 32Up: <a rel="up" accesskey="u" href="Timefns.html#Timefns">Timefns</a> 33<hr> 34</div> 35 36<h3 class="section">8.3 <code>ctime</code>—convert time to local and format as string</h3> 37 38<p><a name="index-ctime-429"></a><a name="index-ctime_005fr-430"></a><strong>Synopsis</strong> 39<pre class="example"> #include <time.h> 40 char *ctime(const time_t *<var>clock</var>); 41 char *ctime_r(const time_t *<var>clock</var>, char *<var>buf</var>); 42 43</pre> 44 <p><strong>Description</strong><br> 45Convert the time value at <var>clock</var> to local time (like <code>localtime</code>) 46and format it into a string of the form 47<pre class="smallexample"> Wed Jun 15 11:38:07 1988\n\0 48</pre> 49 <p>(like <code>asctime</code>). 50 51 <p><br> 52<strong>Returns</strong><br> 53A pointer to the string containing a formatted timestamp. 54 55 <p><br> 56<strong>Portability</strong><br> 57ANSI C requires <code>ctime</code>. 58 59 <p><code>ctime</code> requires no supporting OS subroutines. 60 61 <p><br> 62 63 </body></html> 64 65