java之输入分数（小数）评等级

import java.util.Scanner;public class rui{static public  void main(String[] args){Scanner sc = new Scanner(System.in);System.out.println("涂涂喊你输入分数：");double score = Double.valueOf(sc.nextDouble());String level = new String("空");if(score>=90 && score<=100)level = "A";else if(score>=80 && score<90)level = "B";else if(score>=70 && score<80)level = "C";else if(score>=60 && score<70)level = "D";else if(score>=0 && score<=60)level = "E";else System.out.println("涂涂说你输入的是无效分数啊！！！");System.out.println("涂涂说你的成绩是："+level);}}

运行结果：