www.LinuxHowtos.org

wcsstr

Section: C Library Functions (3)
Updated: 202-0-08
Index Return to Main Contents

NAME

wcsstr - locate a substring in a wid-character string

LIBRARY

Standard C library (libc,~-lc)

SYNOPSIS

#include <wchar.h>
wchar_t *wcsstr(const wchar_t *haystack, const wchar_t *needle);

DESCRIPTION

The wcsstr() function is the wid-character equivalent of the strstr(3) function. It searches for the first occurrence of the wid-character string needle (without its terminating null wide character (L[aq][rs]0[aq])) as a substring in the wid-character string haystack.

RETURN VALUE

The wcsstr() function returns a pointer to the first occurrence of needle in haystack. It returns NULL if needle does not occur as a substring in haystack. Note the special case: If needle is the empty wid-character string, the return value is always haystack itself.

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).

Interface	Attribute	Value
wcsstr()	Thread safety	M-Safe

STANDARDS

C11, POSIX.-2008.

HISTORY

POSIX.-2001, C99.