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towupper ? convert a wide character to uppercase |
#include <wctype.h> wint_t towupper (wint_t wc); |
The towupper function is the wide-character equivalent of the toupper function. If wc is a wide character, it is converted to uppercase. Characters which do not have case are returned unchanged. If wc is WEOF, WEOF is returned. |
The towupper function returns the uppercase equivalent of wc, or WEOF if wc is WEOF. |
ISO/ANSI C, UNIX98 |
towlower(3), towctrans(3), iswupper(3) |
The behaviour of towupper depends on the LC_CTYPE category of the current locale. This function is not very appropriate for dealing with Unicode characters, because Unicode knows about three cases: upper, lower and title case. |