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<html>
<head>
<title>EAGLE Help: strrstr()</title>
</head>
<body bgcolor=white>
<font face=Helvetica,Arial>
<hr>
<i>EAGLE Help</i>
<h1><center>strrstr()</center></h1>
<hr>
<dl>
<dt>
<b>Function</b>
<dd>
Scans a string for the last occurrence of a given substring.
<p>
<dt>
<b>Syntax</b>
<dd>
<tt>int strrstr(string s1, string s2[, int index]);</tt>
<p>
<dt>
<b>Returns</b>
<dd>
The <tt>strrstr</tt> function returns the integer offset of the
first character of s2 in s1, or <tt>-1</tt> if the substring does not
occur in the string.
<p>
</dl>
<b>See also</b> <a href=265.htm>strstr</a>,
<a href=262.htm>strrchr</a>
<p>
If <tt>index</tt> is given, the search starts at that position.
Negative values are counted from the end of the string.
<p>
<b>Example</b>
<pre>
string s1 = "This is a string", s2 = "is a";
int pos = strrstr(s1, s2);
if (pos >= 0)
printf("The substring starts at %d\n", pos);
else
printf("The substring was not found\n");
</pre>
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