int ch ; ~I6N6T Z
ch=getche() ; ;`Nh@*_
if((ch>='a') && (ch<='z')) DK)T2{:
printf("%c is a lowercase letter\n" ,ch); 6S`0<Z;;/
else if ((ch>='A') && (ch<='Z')) jaw&[f
7
print(" %c is a uppercase letter\n" ,ch); ];xDXQd
else if((ch>'0')&&(ch<'9') ;NU-\<Q{
printf(" %c is a number character between 0 and 9\n" ,ch) ; .V4-
else dq,j?~ _}
printf("%c is...") L"bZ~'y
v%:VV*MxF
外面再加个循环就行了