isupper
isupper
Defined in header <ctype.h> | ||
|---|---|---|
int isupper( int ch ); |
Checks if the given character is an uppercase character according to the current C locale. In the default "C" locale, isupper returns true only for the uppercase letters (ABCDEFGHIJKLMNOPQRSTUVWXYZ).
If isupper returns true, it is guaranteed that iscntrl, isdigit, ispunct