wcsstr — locate a substring in a wide-character string

Synopsis

#include <wchar.h>

wchar_t *wcsstr(const wchar_t *haystack, const wchar_t *needle);

Description

The wcsstr() function is the wide-character equivalent of the strstr(3) function. It searches for the first occurrence of the wide-character string needle (without its terminating null wide character (L'\0')) as a substring in the wide-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 wide-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 MT-Safe

Conforming to

POSIX.1-2001, POSIX.1-2008, C99.

See Also

strstr(3), wcschr(3)

Colophon

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Referenced By

signal-safety(7), strnstr.3bsd(3), strstr(3), wcschr(3).

2019-03-06 GNU Linux Programmer's Manual