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| <h3 class="section">5.17 <code>strcasestr</code>—case-insensitive character string search</h3> |
| |
| <p><a name="index-strcasestr-385"></a><strong>Synopsis</strong> |
| <pre class="example"> #include <string.h> |
| char *strcasestr(const char *<var>s</var>, const char *<var>find</var>); |
| |
| </pre> |
| <p><strong>Description</strong><br> |
| <code>strcasestr</code> searchs the string <var>s</var> for |
| the first occurrence of the sequence <var>find</var>. <code>strcasestr</code> |
| is identical to <code>strstr</code> except the search is |
| case-insensitive. |
| |
| <p><br> |
| <strong>Returns</strong><br> |
| |
| <p>A pointer to the first case-insensitive occurrence of the sequence |
| <var>find</var> or <code>NULL</code> if no match was found. |
| |
| <p><br> |
| <strong>Portability</strong><br> |
| <code>strcasestr</code> is in the Berkeley Software Distribution. |
| |
| <p><code>strcasestr</code> requires no supporting OS subroutines. It uses |
| tolower() from elsewhere in this library. |
| |
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