int ch ; va \5
ch=getche() ; @/i;/$\
if((ch>='a') && (ch<='z')) Rg3 Lo ?
printf("%c is a lowercase letter\n" ,ch); |=H*" (
else if ((ch>='A') && (ch<='Z')) cI)T@Zg_o+
print(" %c is a uppercase letter\n" ,ch); ?0_Bs4O\
else if((ch>'0')&&(ch<'9') /fCj;8T3o
printf(" %c is a number character between 0 and 9\n" ,ch) ; B{'x2I#,
else 5y07@x
printf("%c is...") YEF|SEon0
@+LkGrDP
外面再加个循环就行了