int ch ; =fA*b
ch=getche() ; R1.No_`PHq
if((ch>='a') && (ch<='z')) n27df9L
printf("%c is a lowercase letter\n" ,ch); =R+z\`2
else if ((ch>='A') && (ch<='Z')) v4_p3&aj
print(" %c is a uppercase letter\n" ,ch); NR3]MGBKv
else if((ch>'0')&&(ch<'9') eteq Mg}M
printf(" %c is a number character between 0 and 9\n" ,ch) ; Vf?+->-?{
else =apcMW(zn
printf("%c is...") |.kYomJ
Hj&mwn]
外面再加个循环就行了