int ch ; qeGOSGc_
ch=getche() ; k/Q]Ke
if((ch>='a') && (ch<='z')) @L7rE)AU.
printf("%c is a lowercase letter\n" ,ch); *E6 p=
else if ((ch>='A') && (ch<='Z')) Bqj*{m
print(" %c is a uppercase letter\n" ,ch); G;+0V0K
else if((ch>'0')&&(ch<'9') ~vS.D r
printf(" %c is a number character between 0 and 9\n" ,ch) ; O-Y E6u
else @#">~P|Hp
printf("%c is...") XA%?35v~
uBJF}"4ej
外面再加个循环就行了