You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
92 lines
3.6 KiB
HTML
92 lines
3.6 KiB
HTML
4 years ago
|
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
||
|
|
<html>
|
||
|
|
<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
|
||
|
|
<head>
|
||
|
|
<title>itoa (The Red Hat newlib C Library)</title>
|
||
|
|
|
||
|
|
<meta name="description" content="itoa (The Red Hat newlib C Library)">
|
||
|
|
<meta name="keywords" content="itoa (The Red Hat newlib C Library)">
|
||
|
|
<meta name="resource-type" content="document">
|
||
|
|
<meta name="distribution" content="global">
|
||
|
|
<meta name="Generator" content="makeinfo">
|
||
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
|
||
|
|
<link href="index.html#Top" rel="start" title="Top">
|
||
|
|
<link href="Document-Index.html#Document-Index" rel="index" title="Document Index">
|
||
|
|
<link href="Document-Index.html#SEC_Contents" rel="contents" title="Table of Contents">
|
||
|
|
<link href="Stdlib.html#Stdlib" rel="up" title="Stdlib">
|
||
|
|
<link href="labs.html#labs" rel="next" title="labs">
|
||
|
|
<link href="getenv.html#getenv" rel="prev" title="getenv">
|
||
|
|
<style type="text/css">
|
||
|
|
<!--
|
||
|
|
a.summary-letter {text-decoration: none}
|
||
|
|
blockquote.indentedblock {margin-right: 0em}
|
||
|
|
blockquote.smallindentedblock {margin-right: 0em; font-size: smaller}
|
||
|
|
blockquote.smallquotation {font-size: smaller}
|
||
|
|
div.display {margin-left: 3.2em}
|
||
|
|
div.example {margin-left: 3.2em}
|
||
|
|
div.lisp {margin-left: 3.2em}
|
||
|
|
div.smalldisplay {margin-left: 3.2em}
|
||
|
|
div.smallexample {margin-left: 3.2em}
|
||
|
|
div.smalllisp {margin-left: 3.2em}
|
||
|
|
kbd {font-style: oblique}
|
||
|
|
pre.display {font-family: inherit}
|
||
|
|
pre.format {font-family: inherit}
|
||
|
|
pre.menu-comment {font-family: serif}
|
||
|
|
pre.menu-preformatted {font-family: serif}
|
||
|
|
pre.smalldisplay {font-family: inherit; font-size: smaller}
|
||
|
|
pre.smallexample {font-size: smaller}
|
||
|
|
pre.smallformat {font-family: inherit; font-size: smaller}
|
||
|
|
pre.smalllisp {font-size: smaller}
|
||
|
|
span.nolinebreak {white-space: nowrap}
|
||
|
|
span.roman {font-family: initial; font-weight: normal}
|
||
|
|
span.sansserif {font-family: sans-serif; font-weight: normal}
|
||
|
|
ul.no-bullet {list-style: none}
|
||
|
|
-->
|
||
|
|
</style>
|
||
|
|
|
||
|
|
|
||
|
|
</head>
|
||
|
|
|
||
|
|
<body lang="en">
|
||
|
|
<a name="itoa"></a>
|
||
|
|
<div class="header">
|
||
|
|
<p>
|
||
|
|
Next: <a href="labs.html#labs" accesskey="n" rel="next">labs</a>, Previous: <a href="getenv.html#getenv" accesskey="p" rel="prev">getenv</a>, Up: <a href="Stdlib.html#Stdlib" accesskey="u" rel="up">Stdlib</a> [<a href="Document-Index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Document-Index.html#Document-Index" title="Index" rel="index">Index</a>]</p>
|
||
|
|
</div>
|
||
|
|
<hr>
|
||
|
|
<a name="itoa_002d_002d_002dinteger-to-string"></a>
|
||
|
|
<h3 class="section">2.19 <code>itoa</code>—integer to string</h3>
|
||
|
|
<a name="index-itoa"></a>
|
||
|
|
<p><strong>Synopsis</strong>
|
||
|
|
</p><div class="example">
|
||
|
|
<pre class="example">#include <stdlib.h>
|
||
|
|
char *itoa(int <var>value</var>, char *<var>str</var>, int <var>base</var>);
|
||
|
|
char *__itoa(int <var>value</var>, char *<var>str</var>, int <var>base</var>);
|
||
|
|
|
||
|
|
</pre></div>
|
||
|
|
<p><strong>Description</strong><br>
|
||
|
|
<code>itoa</code> converts the integer <var>value</var> to a null-terminated string
|
||
|
|
using the specified base, which must be between 2 and 36, inclusive.
|
||
|
|
If <var>base</var> is 10, <var>value</var> is treated as signed and the string will be
|
||
|
|
prefixed with ’-’ if negative. For all other bases, <var>value</var> is treated as
|
||
|
|
unsigned. <var>str</var> should be an array long enough to contain the converted
|
||
|
|
value, which in the worst case is sizeof(int)*8+1 bytes.
|
||
|
|
</p>
|
||
|
|
<br>
|
||
|
|
<p><strong>Returns</strong><br>
|
||
|
|
A pointer to the string, <var>str</var>, or NULL if <var>base</var> is invalid.
|
||
|
|
</p>
|
||
|
|
<br>
|
||
|
|
<p><strong>Portability</strong><br>
|
||
|
|
<code>itoa</code> is non-ANSI.
|
||
|
|
</p>
|
||
|
|
<p>No supporting OS subroutine calls are required.
|
||
|
|
</p>
|
||
|
|
<br>
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
</body>
|
||
|
|
</html>
|