java switch实例3

//import java.util.Scanner;

public class Switch0726a {

    public static void main(String[] args) {

        java.util.Scanner s = new java.util.Scanner(System.in);

        System.out.print("请输入你的成绩：");

        double num1 = s.nextDouble();

        int grdae = (int)(num1/10);

        switch(grdae){

            case 9:case 10:

            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");

        }

    }        

    }