题解 | #判断学生成绩等级#

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String grade =scanner.next();

        //write your code here......
        switch(grade){
            case "A": System.out.println("优秀");
            break;

            case "B":System.out.println("良好");
            break;

            case "C": System.out.println("及格");
            break;

            case "D":System.out.println("不及格");
            break;

            default:System.out.println("未知等级");
        }
        

    }
}