3. Library calls (functions within program libraries)

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Section: Linux Programmer's Manual (3)
Updated: 2015-08-08
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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

For an explanation of the terms used in this section, see attributes(7).
InterfaceAttributeValue
strlen() Thread safetyMT-Safe
 

CONFORMING TO

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

SEE ALSO

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

COLOPHON

This page is part of release 4.04 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/.


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ATTRIBUTES
CONFORMING TO
SEE ALSO
COLOPHON

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