int ch ; yn{U/+
ch=getche() ; }iR!uhi#
if((ch>='a') && (ch<='z')) H3S u'3
printf("%c is a lowercase letter\n" ,ch); *Rj*%S
else if ((ch>='A') && (ch<='Z')) hhOrO<(
print(" %c is a uppercase letter\n" ,ch); 0y#TGM|0D
else if((ch>'0')&&(ch<'9') f=40_5a6
printf(" %c is a number character between 0 and 9\n" ,ch) ; J_XbtCmt
else f&Meiu+
printf("%c is...") f/=H#'+8
;[-y>qU0
外面再加个循环就行了