strlen3
String length
Usage
#include <string.h>
size_t strlen(const char *s);
Library
Standard C library (libc, -lc)
Overview
The strlen() function calculates the length of the string pointed to by s, excluding the terminating null byte ('\0').
It is equivalent to
strnul(s) - s
Return value
The strlen() function returns the number of bytes in the string pointed to by s.
Attributes
For an explanation of the terms used in this section, see attributes(7).
| Interface | Attribute | Value |
| strlen() | Thread safety | MT-Safe |
Releases
19 releases since Debian 1.1 (Buzz); the text changed 13 times.