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90 lines
3.4 KiB
HTML
90 lines
3.4 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>strstr (The Red Hat newlib C Library)</title>
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<meta name="description" content="strstr (The Red Hat newlib C Library)">
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<meta name="keywords" content="strstr (The Red Hat newlib C Library)">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content="makeinfo">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Document-Index.html#Document-Index" rel="index" title="Document Index">
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<link href="Document-Index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Strings.html#Strings" rel="up" title="Strings">
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<link href="strtok.html#strtok" rel="next" title="strtok">
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<link href="strspn.html#strspn" rel="prev" title="strspn">
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</head>
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<body lang="en">
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<a name="strstr"></a>
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<div class="header">
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<p>
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Next: <a href="strtok.html#strtok" accesskey="n" rel="next">strtok</a>, Previous: <a href="strspn.html#strspn" accesskey="p" rel="prev">strspn</a>, Up: <a href="Strings.html#Strings" accesskey="u" rel="up">Strings</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>
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</div>
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<hr>
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<a name="strstr_002d_002d_002dfind-string-segment"></a>
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<h3 class="section">5.41 <code>strstr</code>—find string segment</h3>
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<a name="index-strstr"></a>
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<p><strong>Synopsis</strong>
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</p><div class="example">
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<pre class="example">#include <string.h>
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char *strstr(const char *<var>s1</var>, const char *<var>s2</var>);
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</pre></div>
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<p><strong>Description</strong><br>
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Locates the first occurrence in the string pointed to by <var>s1</var> of
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the sequence of characters in the string pointed to by <var>s2</var>
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(excluding the terminating null character).
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</p>
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<br>
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<p><strong>Returns</strong><br>
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Returns a pointer to the located string segment, or a null
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pointer if the string <var>s2</var> is not found. If <var>s2</var> points to
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a string with zero length, <var>s1</var> is returned.
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</p>
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<br>
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<p><strong>Portability</strong><br>
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<code>strstr</code> is ANSI C.
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</p>
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<p><code>strstr</code> requires no supporting OS subroutines.
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</p>
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<br>
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</body>
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</html>
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