redhat man page for strlen

STRLEN(3)						     Linux Programmer's Manual							 STRLEN(3)

NAME
       strlen - calculate the length of a string

SYNOPSIS
       #include <string.h>

       size_t strlen(const char *s);

DESCRIPTION
       The strlen() function calculates the length of the string s, not including the terminating `' character.

RETURN VALUE
       The strlen() function returns the number of characters in s.

CONFORMING TO
       SVID 3, POSIX, BSD 4.3, ISO 9899

SEE ALSO
       string(3)

								    1993-04-12								 STRLEN(3)