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){
        //注意 grade 的类型是String，所以case的value值为String类型，故用""
        case "A" :
            System.out.print("优秀");
            break;
        case "B" :
            System.out.print("良好");
            break;
        case "C" :
            System.out.print("及格");
            break;
        case "D" :
            System.out.print("不及格");
            break;
        default :
            System.out.print("未知等级");
            
    }

}

}