int ch ; ?tA%A
ch=getche() ; -iKoQkHt
if((ch>='a') && (ch<='z')) b!bg sd
printf("%c is a lowercase letter\n" ,ch); :$0yp`k
else if ((ch>='A') && (ch<='Z')) [:uHe#L
print(" %c is a uppercase letter\n" ,ch); w!'y,yb%
else if((ch>'0')&&(ch<'9') FbRGfHL[
printf(" %c is a number character between 0 and 9\n" ,ch) ; W^)mz,%x
else TD%&9$F
printf("%c is...") f;AI4:#I
GUZ.Pw
外面再加个循环就行了