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<a name="rpmatch_002d_002d_002ddetermine-whether-response-to-question-is-affirmative-or-negative"></a>
<h3 class="section">2.36 <code>rpmatch</code>&mdash;determine whether response to question is affirmative or negative</h3>
<a name="index-rpmatch"></a>
<p><strong>Synopsis</strong>
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<pre class="example">#include &lt;stdlib.h&gt;
int rpmatch(const char *<var>response</var>);

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<p><strong>Description</strong><br>
The <code>rpmatch</code> function determines whether <var>response</var> is an affirmative
or negative response to a question according to the current locale.
</p>
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<p><strong>Returns</strong><br>
<code>rpmatch</code> returns 1 if <var>response</var> is affirmative, 0 if negative, or -1
if not recognized as either.
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<p><strong>Portability</strong><br>
<code>rpmatch</code> is a BSD extension also found in glibc.
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<p><strong>Notes</strong><br>
No supporting OS subroutines are required.
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