strlen

Syntax

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

Description

This function returns the number of characters in string.

Return Value

The length of the string.

Portability

ANSI/ISO C	C89; C99
POSIX	1003.2-1992; 1003.1-2001

Example

if (strlen(fname) > PATH_MAX) invalid_file(fname);