int ch ; jaMjZp;{(
ch=getche() ; a PfO$b:
if((ch>='a') && (ch<='z')) J1RJ*mo7,
printf("%c is a lowercase letter\n" ,ch); GmEJhr.3`=
else if ((ch>='A') && (ch<='Z')) cyv`B3}
print(" %c is a uppercase letter\n" ,ch); 4n g]\ituS
else if((ch>'0')&&(ch<'9') JZ*/,|1}EC
printf(" %c is a number character between 0 and 9\n" ,ch) ; BmMGx8P
else 6x[}g
printf("%c is...") A _
N;
ZC`wO%,
外面再加个循环就行了