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();
        if(grade.equals("A"))
        System.out.println("优秀");
        else if(grade.equals("B"))
        System.out.println("良好");
        else if(grade.equals("C"))
        System.out.println("及格");
        //write your code here......
         else if(grade.equals("D"))
         System.out.println("不及格");
         else 
         System.out.println("未知等级");

        

    }
}