package Homework;

import java.util.Scanner;

public class Homework2LibraryFines {

public static void main(String[] args) {
    // Variables
    int cardNumber;
    int age;
    int overdue;
    int itemType;
    double overdueFine;
    int fineAdjustment;
    int books = 1;
    int magazines = 2;
    int dvd = 3;

    Scanner input = new Scanner(System.in);

    System.out.println("Enter patron's library card number");
    cardNumber = input.nextInt();

    System.out.println("Enter patron's age");
    age = input.nextInt();

    System.out.println("Enter item type 1.Book, 2.Magazine, 3.DVD");
    itemType = input.nextInt();

    System.out.println("Enter number of days overdue");
    overdue = input.nextInt();

    System.out.println("Enter overdue fine");
    overdueFine = input.nextDouble();

    System.out.println("Enter fine adjustment");
    fineAdjustment = input.nextInt();
    if (overdueFine == books) {
        overdueFine += 0.50;
    } else if (overdueFine == magazines) {
        overdueFine += 0.25;
    } else if (overdueFine == dvd) {
        overdueFine += 1.50;
    } else if (age > 70) {
        overdueFine += 0;
    } else if (age >= 6 && age <= 17) {
        overdueFine += 1.00;
    }

    System.out.println(cardNumber + " is " + age + " years old " + "and has an overdue " + itemType + "." + "The "
            + itemType + " is " + overdue + " days overdue");

}

}

输出

输入用户的图书卡号
222222
输入用户年龄
30
输入项目类型1.书本、2.杂志、3.dvd
三
输入逾期天数
10
输入滞纳金
2
输入微调
三
22222已满30岁，逾期3天，逾期10天