成绩分类

import java.util.*;
public class LianXi
{
  public static void main(String[] args)
  {
    Scanner reader=new Scanner(System.in);
    System.out.print("请输入你的成绩：");
    int score;
    score=reader.nextInt();
    switch(score/10)
    {
    case 10:
    case 9:
      System.out.println("优");
      break;
    case 8:
        System.out.println("良");
      break;
    case 7:
        System.out.println("中");
      break;
    case 6:
        System.out.println("及格");
      break;
        default:
        System.out.println("不及格");
      break;
    }
  }
}