NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ATTRIBUTES | CONFORMING TO | SEE ALSO | COLOPHON 

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

NAME         top

       strlen - calculate the length of a string

SYNOPSIS         top

       #include <string.h>
       size_t strlen(const char *s);

DESCRIPTION         top

       The strlen() function calculates the length of the string pointed to
       by s, excluding the terminating null byte ('\0').

RETURN VALUE         top

       The strlen() function returns the number of characters in the string
       pointed to by s.

ATTRIBUTES         top

       For an explanation of the terms used in this section, see
       attributes(7).
       ┌──────────┬───────────────┬─────────┐
       │Interface │ Attribute     │ Value   │
       ├──────────┼───────────────┼─────────┤
       │strlen()  │ Thread safety │ MT-Safe │
       └──────────┴───────────────┴─────────┘

CONFORMING TO         top

       POSIX.1-2001, POSIX.1-2008, C89, C99, C11, SVr4, 4.3BSD.

SEE ALSO         top

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

COLOPHON         top

       This page is part of release 4.12 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)

Pages that refer to this page: lber-types(3),  strchr(3),  string(3),  strnlen(3),  wcslen(3),  signal-safety(7)