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| <h3 class="section">5.26 <code>strlen</code>—character string length</h3> |
| |
| <p><a name="index-strlen-394"></a><strong>Synopsis</strong> |
| <pre class="example"> #include <string.h> |
| size_t strlen(const char *<var>str</var>); |
| |
| </pre> |
| <p><strong>Description</strong><br> |
| The <code>strlen</code> function works out the length of the string |
| starting at <code>*</code><var>str</var> by counting chararacters until it |
| reaches a <code>NULL</code> character. |
| |
| <p><br> |
| <strong>Returns</strong><br> |
| <code>strlen</code> returns the character count. |
| |
| <p><br> |
| <strong>Portability</strong><br> |
| <code>strlen</code> is ANSI C. |
| |
| <p><code>strlen</code> requires no supporting OS subroutines. |
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