1<html lang="en"> 2<head> 3<title>memset - 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="Strings.html#Strings" title="Strings"> 9<link rel="prev" href="mempcpy.html#mempcpy" title="mempcpy"> 10<link rel="next" href="rindex.html#rindex" title="rindex"> 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="memset"></a> 29<p> 30Next: <a rel="next" accesskey="n" href="rindex.html#rindex">rindex</a>, 31Previous: <a rel="previous" accesskey="p" href="mempcpy.html#mempcpy">mempcpy</a>, 32Up: <a rel="up" accesskey="u" href="Strings.html#Strings">Strings</a> 33<hr> 34</div> 35 36<h3 class="section">5.12 <code>memset</code>—set an area of memory</h3> 37 38<p><a name="index-memset-380"></a><strong>Synopsis</strong> 39<pre class="example"> #include <string.h> 40 void *memset(void *<var>dst</var>, int <var>c</var>, size_t <var>length</var>); 41 42</pre> 43 <p><strong>Description</strong><br> 44This function converts the argument <var>c</var> into an unsigned 45char and fills the first <var>length</var> characters of the array 46pointed to by <var>dst</var> to the value. 47 48 <p><br> 49<strong>Returns</strong><br> 50<code>memset</code> returns the value of <var>dst</var>. 51 52 <p><br> 53<strong>Portability</strong><br> 54<code>memset</code> is ANSI C. 55 56 <p><code>memset</code> requires no supporting OS subroutines. 57 58 <p><br> 59 60 </body></html> 61 62