打印分数---循环switch

import java.util.Scanner;


public class Mark {


public static void main(String[] args) {
// TODO Auto-generated method stub


System.out.println("请输入分数：");
Scanner sc = new Scanner(System.in);
int mark = sc.nextInt();
if (mark > 100 || mark < 0) {
System.out.println("该数不存在！！");
} else 
switch (mark / 10) {
case 10:
System.out.println("A");
break;
case 9:
System.out.println("A");
break;
case 8:
System.out.println("B");
break;
case 7:
System.out.println("C");
break;
case 6:
System.out.println("D");
break;
default:
System.out.println("E");
break;
}
}


}