towupper - convert a wide character to uppercase
wint_t towupper (wint_t wc);
function is the wide-character equivalent of the
function. If wc
is a wide character, it is converted to
uppercase. Characters which do not have case are returned unchanged. If
is WEOF, WEOF is returned.
function returns the uppercase equivalent of wc
WEOF if wc
ISO/ANSI C, UNIX98
The behaviour of towupper
depends on the LC_CTYPE category of the current
This function is not very appropriate for dealing with Unicode characters,
because Unicode knows about three cases: upper, lower and title case.