Question

java题目求解。着急上交，只要代码，谢谢大家。

Answer 1

1、代码如下

import java.util.*;

public class Main

{

public static void main(String[] args) {

System.out.println("请输入成绩：");

Scanner input = new Scanner(System.in);

int grade = input.nextInt();

int flag =0;

if (grade>100||grade<0)flag=-1;

else if(grade>=90)flag=1;

else if(grade<90&&grade>80)flag=2;

else if(grade<80&&grade>70)flag=3;

else if(grade<70&&grade>=60)flag=4;

else if(grade<60)flag=5;

switch(flag){

    

    case 1:

        System.out.println("A");

        break;

    case 2:

         System.out.println("B");

        break;

    case 3:

         System.out.println("C");

        break;

    case 4:

         System.out.println("D");

        break;

        case 5:

         System.out.println("E");

        break;

    default:

    System.out.println("输入有误");

        break;

        

    

}

}

}

2、效果如图