int ch ; DI\=udN
ch=getche() ; g Wtc3
if((ch>='a') && (ch<='z')) Xs2}n^#i
printf("%c is a lowercase letter\n" ,ch); 2yA)SGri
else if ((ch>='A') && (ch<='Z')) bZxN]6_
print(" %c is a uppercase letter\n" ,ch); +M"j#H
else if((ch>'0')&&(ch<'9') ~0MpB~ {xd
printf(" %c is a number character between 0 and 9\n" ,ch) ; R"W}\0k
else FGDVBUY@
printf("%c is...") ggDT5hb
}`qAb/Ov
外面再加个循环就行了