Functions HI-TECH C TOUPPER
TOUPPER, TOLOWER, TOASCII
SYNOPSIS
#include <ctype.h> char toupper(int c); char tolower(int c); char toascii(int c); char c;
DESCRIPTION
Toupper() converts its lower case alphabetic argument to upper case, tolower() performs the reverse conversion, and toascii() returns a result that is guaranteed in the range 0-0177. Toupper() and tolower return their arguments if it is not an alphabetic character.
SEE ALSO
islower, isupper, isascii et. al.