int ch ; 9Do75S{(
ch=getche() ; qkhre3
if((ch>='a') && (ch<='z')) s-rc0:I
printf("%c is a lowercase letter\n" ,ch); }oZ8esZU2
else if ((ch>='A') && (ch<='Z')) AF#:*<Ev
print(" %c is a uppercase letter\n" ,ch); w3(G!:
else if((ch>'0')&&(ch<'9') /FN:yCf
printf(" %c is a number character between 0 and 9\n" ,ch) ; vE)N6Ss
else 3q/Us0jr
printf("%c is...") l{7}3Am6
hn2:@^=f
外面再加个循环就行了