技術標籤：java問題switch

import java.util.Scanner;

public class Score12 {
    public static void main(String[] args) {
        Scanner in=new Scanner(System.in);
        int score=in.nextInt();
        switch (score){
            case score>=0&&score<60:
                System.out.println(
 
"不及格");
                break;
            case score>=60&&<70:
                System.out.println("及格");
                break;

            case score>=70&&<80:
                System.out.println("中");
                break;

            case score>=
 
80&&<90:
                System.out.println("良");
                break;

            default:
                System.out.println("優");
        }
    }
}