Searches a specified storage area for the first occurrence of a specified character.
wchar_t *wmemchr(const wchar_t *s, wchar_t c, size_t n);
s Pointer to the storage area to be searched
n Number of characters to search
If the character is found: Pointer to the found character
If the character is not found: NULL
The wmemchr function is the wide-character version of the memchr function.