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, excluding the terminating
       null byte ('\0').

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

ATTRIBUTES
   Multithreading (see pthreads(7))
       The strlen() function is thread-safe.

CONFORMING TO
       SVr4, 4.3BSD, C89, C99.

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

COLOPHON
       This page is part of release 3.74 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 http://www.kernel.org/doc/man-pages/.



GNU                                         2014-02-25                                  STRLEN(3)