int ch ; dk<XzO~g
ch=getche() ; Uyr3dN%*r
if((ch>='a') && (ch<='z')) -}6xoF?
printf("%c is a lowercase letter\n" ,ch); W|,V50K
else if ((ch>='A') && (ch<='Z')) 5pRV3K{H
print(" %c is a uppercase letter\n" ,ch); j]m|7]
else if((ch>'0')&&(ch<'9') ed_FiQd
printf(" %c is a number character between 0 and 9\n" ,ch) ; zb
Z4|_
else 'vaLUy9]
printf("%c is...") A
&9(mB
okFvn;
外面再加个循环就行了