package Studytest;

import java.util.Scanner;

public class Prog5 {

    public static void main(String[] args)

    {

        Scanner sc = new Scanner(System.in);

        System.out.println("请输入你的成绩：");

        int fenshu = sc.nextInt();

        grade(fenshu);

    }

   //成绩等级计算

   private static void grade(int n)

   {

       if(n>100||n<0)

       {

           System.out.println("输入无效");

       }else {

           String str = (n>=90)?"分，属于A等":((n>60)?"分，属于B等":"分，属于C等");

           System.out.println(n+str);

       }

   }

}