int ch ; &y=OZ
!M
ch=getche() ; I]+
zG
if((ch>='a') && (ch<='z')) .FgeAxflP
printf("%c is a lowercase letter\n" ,ch); :/szA?:W
else if ((ch>='A') && (ch<='Z')) rg
k1.0U0
print(" %c is a uppercase letter\n" ,ch); d v[.u{#tP
else if((ch>'0')&&(ch<'9') f:&JKB)N
printf(" %c is a number character between 0 and 9\n" ,ch) ; h@=@
fa
else 9"+MZ$
printf("%c is...") @<pd@Mpf]
R8u8jG(4
外面再加个循环就行了