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 |
POSIX.1-2001, POSIX.1-2008, C89, C99, C11, SVr4, 4.3BSD.
COLOPHON¶
This page is part of release 4.16 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/.
