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 pointed to by
       s, excluding the terminating null byte ('\0').

RETURN VALUE
       The strlen() function returns the number of characters  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 |
       +----------+---------------+---------+
CONFORMING TO
       POSIX.1-2001, POSIX.1-2008, C89, C99, C11, SVr4, 4.3BSD.

SEE ALSO
       string(3), strnlen(3), wcslen(3), wcsnlen(3)

COLOPHON
       This page is part of release 4.10 of the Linux  man-pages  project.   A
       description  of	the project, information about reporting bugs, and the
       latest	 version    of	  this	  page,	   can	   be	  found	    at
       https://www.kernel.org/doc/man-pages/.



GNU				  2016-03-15			     STRLEN(3)