int ch ; n>U5R_T
ch=getche() ; v1,oilL
if((ch>='a') && (ch<='z')) gr-OHeid
printf("%c is a lowercase letter\n" ,ch); @49S`
else if ((ch>='A') && (ch<='Z')) 0Pi:N{x8
print(" %c is a uppercase letter\n" ,ch); &~U ] ~;@
else if((ch>'0')&&(ch<'9') B@
KQ]4-
printf(" %c is a number character between 0 and 9\n" ,ch) ; ('p5:d
else Tc3yS(aq
printf("%c is...") ^\,E&=/}M
K@w{"7}
外面再加个循环就行了