int ch ; <Rz[G+0S=
ch=getche() ; 1\/~>
if((ch>='a') && (ch<='z')) 'G`xD3 E3,
printf("%c is a lowercase letter\n" ,ch); yz)Nco]
else if ((ch>='A') && (ch<='Z')) ler$HA%F]
print(" %c is a uppercase letter\n" ,ch); W~s:SN
else if((ch>'0')&&(ch<'9') dE3M
printf(" %c is a number character between 0 and 9\n" ,ch) ; y4H/CH$%
else upq3)t_
printf("%c is...") T`c:16I
8 v da"
外面再加个循环就行了