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| <h3 class="section">5.32 <code>strnlen</code>—character string length</h3> |
| |
| <p><a name="index-strnlen-400"></a><strong>Synopsis</strong> |
| <pre class="example"> #include <string.h> |
| size_t strnlen(const char *<var>str</var>, size_t <var>n</var>); |
| |
| </pre> |
| <p><strong>Description</strong><br> |
| The <code>strnlen</code> function works out the length of the string |
| starting at <code>*</code><var>str</var> by counting chararacters until it |
| reaches a NUL character or the maximum: <var>n</var> number of |
| characters have been inspected. |
| |
| <p><br> |
| <strong>Returns</strong><br> |
| <code>strnlen</code> returns the character count or <var>n</var>. |
| |
| <p><br> |
| <strong>Portability</strong><br> |
| <code>strnlen</code> is a GNU extension. |
| |
| <p><code>strnlen</code> requires no supporting OS subroutines. |
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