towupper - convert wide characters to uppercase

Syntax	#include <wchar.h> wint_t towupper(wint_t wc);
Description	Description towupper() converts the wide character wc to the corresponding uppercase letter if wc is a lowercase wide-character code.
Return val.	Uppercase of wc if wc is a lowercase letter.
Notes	Restriction This version of the C runtime system only supports 1-byte characters as wide character codes. They are of type wchar_t (see stddef.h). (End)
See also	towlower(), setlocale(), wchar.h.