int ch ; Z-b^{uP
ch=getche() ; L^VG?J
if((ch>='a') && (ch<='z')) <!&&Qd-d6H
printf("%c is a lowercase letter\n" ,ch); DL2gui3
else if ((ch>='A') && (ch<='Z'))
;KmSz 1A
print(" %c is a uppercase letter\n" ,ch); POc<
G^
else if((ch>'0')&&(ch<'9') ~l-Q0wg
printf(" %c is a number character between 0 and 9\n" ,ch) ; "}|n;:r
else Hq^sU%
printf("%c is...") >U9*
jd=k[Yqr
外面再加个循环就行了