java中If-else的使用演示

package struct;

import java.util.Scanner;

public class IfDemo2 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入成绩");
        int score = scanner.nextInt();
        if(score==100){
            System.out.println("满分");
        }else if(score>=80&&score<100){
            System.out.println("优秀");
        }else if (score>=60&&score<80){
            System.out.println("良好");
        }else if(score>=0&&score<60) {
            System.out.println("不及格");
        }else {
            System.out.println("无效成绩");
        }

        scanner.close();
    }
}