int ch ; cDK)zD
ch=getche() ; #Tt*NU
if((ch>='a') && (ch<='z')) uBxoMxWm
printf("%c is a lowercase letter\n" ,ch); \
FJ ae
else if ((ch>='A') && (ch<='Z')) c _!!DEe7
print(" %c is a uppercase letter\n" ,ch); ;--D?Gs]Qr
else if((ch>'0')&&(ch<'9') >(.Y%$9"E
printf(" %c is a number character between 0 and 9\n" ,ch) ; 7|GSs=
else 1N<n)>X4
printf("%c is...") z4;@"B
\A)Pcc}7
外面再加个循环就行了