wcsstr(3) Library Functions Manual wcsstr(3) NAME wcsstr - locate a substring in a wide-character string LIBRARY Standard C library (libc, -lc) SYNOPSIS #include 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 | +--------------------------------------------+---------------+---------+ STANDARDS C11, POSIX.1-2008. HISTORY POSIX.1-2001, C99. SEE ALSO strstr(3), wcschr(3) Linux man-pages 6.9.1 2024-06-15 wcsstr(3)