int ch ; m[D]4h9
ch=getche() ; \pVWYx
if((ch>='a') && (ch<='z')) h.)o4(bO
printf("%c is a lowercase letter\n" ,ch); W5R /
else if ((ch>='A') && (ch<='Z')) 4(TR'_X(
print(" %c is a uppercase letter\n" ,ch); rfYFS96
else if((ch>'0')&&(ch<'9') &nfGRb
printf(" %c is a number character between 0 and 9\n" ,ch) ; L[O.]2
else -HUlB|Q8r
printf("%c is...") zA*I=3E(
3oMhsQz~z
外面再加个循环就行了