int ch ; ~DF:lqwWP
ch=getche() ; 6^)}PX= *
if((ch>='a') && (ch<='z')) gTf|^?vd
printf("%c is a lowercase letter\n" ,ch); kH948<fk3
else if ((ch>='A') && (ch<='Z')) 9X}I>
print(" %c is a uppercase letter\n" ,ch); G"dS+,Q
else if((ch>'0')&&(ch<'9') J
CGC
printf(" %c is a number character between 0 and 9\n" ,ch) ; Y&.UIosWb
else !mJo'K
printf("%c is...") X/0v'N
4QHS{tj
外面再加个循环就行了