java嵌套for循环基础练习 -班级平均分

package com.qf.refor;

import java.util.Scanner;

public class PingJunFen {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        double allclass = 0;         //全部班级总分
        double passman = 0;           //及格人数计数器
        for (int j = 0;j <3;j++) {     //控制班级数量
            int sum = 0;
            for (int i = 0; i < 5; i++) {//控制学生人数
                System.out.println("请输入"+(j+1)+"班第" + (i + 1) + "名同学的成绩");
                int score = input.nextInt();
                if (score >= 60){
                    passman += 1;
                }
                sum += score;
            }
            System.out.println((j+1)+"班总成绩为" + sum + "t平均分为" + (sum / 5));
            allclass += sum;

        }
        System.out.println("所有班级成绩为"+allclass+"t所有班级学生平均分为"+(allclass/15));
        System.out.println("及格人数为"+passman+"人");
    }
}