java - 另一个收银机程序

Question

我想编写一个程序，该程序接受用户输入的价格、他们支付的金额以及找零的金额。我还希望程序指定应找零的硬币和纸币。

我认为我已经非常接近了，但是当我运行该程序时，我只得到 0 应付的硬币和纸币数量。

我不是在找人为我编写程序，我只是需要知道我做错了什么，毫无疑问，这是我忽略的简单但我无法弄清楚的事情。

这就是我到目前为止所做的，我知道它不太漂亮，但随着我变得更有经验，我会继续努力。

谢谢。

Scanner cashregister = new Scanner(System.in);

    System.out.println("Thank you for your purchase!");


    int amountDue = 0, amountPaid = 0, changeDue = 0;


    int fiftyEuro = 5000;

    int twentyEuro = 2000;

    int tenner = 1000;

    int fiver = 500;

    int two = 200;

    int one = 100;

    int fiftyCent = 50;

    int twentyCent = 20;

    int tenCent = 10;

    int fiveCent = 5;

    int twoCent = 2;

    int oneCent = 1;



    fiftyEuro = changeDue / 5000;

    changeDue = changeDue %= 5000;


    twentyEuro = changeDue / 2000;

    changeDue = changeDue %= 2000;


    tenner = changeDue / 1000;

    changeDue = changeDue %= 1000;


    fiver = changeDue / 500;

    changeDue = changeDue %= 500;


    two = changeDue / 200;

    changeDue = changeDue %= 200;


    one = changeDue / 100;

    changeDue = changeDue %= 100;


    fiftyCent = changeDue / 50;

    changeDue = changeDue %= 50;


    twentyCent = changeDue / 20;

    changeDue = changeDue %= 20;


    tenCent = changeDue / 10;

    changeDue = changeDue %= 10;


    fiveCent = changeDue / 5;

    changeDue = changeDue %= 5;


    twoCent = changeDue / 2;

    changeDue = changeDue %= 2;


    oneCent = changeDue / 1;

    changeDue = changeDue %= 1;


    if (amountDue > amountPaid)

        System.out.println("\nThe amount due must be less then or equal to the amount you are paying");


    System.out.println("\nThe amount due, in cents: ");

    amountDue = cashregister.nextInt();


    System.out.println("\nThe amount paid, in cents: ");

    amountPaid = cashregister.nextInt();

    changeDue = amountPaid - amountDue;


    System.out.println("\nYour change, in cents is: " + changeDue);


    System.out.println("\nThe change for " + changeDue + " is: ");


    System.out.println(fiftyEuro + "   \u20ac" + "50"); //€50 notes due

    System.out.println(twentyEuro + "   \u20ac" + "20"); //€20 notes due

    System.out.println(tenner + "   \u20ac" + "10"); //€10 notes due

    System.out.println(fiver + "   \u20ac" + "5"); //€5 notes due

    System.out.println(two + "   \u20ac" + "2"); //€2 coins due

    System.out.println(one + "   \u20ac" + "1"); //€1 coins due

    System.out.println(fiftyCent + "   50" + "c"); //50c coins due

    System.out.println(twentyCent + "   20" + "c"); //20c coins due

    System.out.println(tenCent + "   10" + "c"); //10c coins due

    System.out.println(fiveCent + "   5" + "c"); //5c coins due

    System.out.println(twoCent + "   2" + "c"); //2c coins due

    System.out.println(oneCent + "   1" + "c"); //1c coins due


    cashregister.close();

    return;

}

}

这是我的输出示例

感谢您的购买!

应付金额(以分为单位):2450

支付的金额(以分为单位):5000

您的零钱(以美分为单位)是:2550

2550 的变化是:0 50 欧元0 20 欧元0 10 欧元0 5 欧元0 欧元 20 欧元 10 50℃0 20℃0 10c0 5c0 2c0 1c

正如您所看到的，它没有说明客户应该获得每张纸币/硬币的数量。

Answer 1

将这些代码移到后面

    fiftyEuro = changeDue / 5000;
    changeDue = changeDue %= 5000;
    twentyEuro = changeDue / 2000;
    changeDue = changeDue %= 2000;
    tenner = changeDue / 1000;
    changeDue = changeDue %= 1000;
    fiver = changeDue / 500;
    changeDue = changeDue %= 500;
    two = changeDue / 200;
    changeDue = changeDue %= 200;
    one = changeDue / 100;
    changeDue = changeDue %= 100;
    fiftyCent = changeDue / 50;
    changeDue = changeDue %= 50;
    twentyCent = changeDue / 20;
    changeDue = changeDue %= 20;
    tenCent = changeDue / 10;
    changeDue = changeDue %= 10;
    fiveCent = changeDue / 5;
    changeDue = changeDue %= 5;
    twoCent = changeDue / 2;
    changeDue = changeDue %= 2;
    oneCent = changeDue / 1;
    changeDue = changeDue %= 1;

在这些行之后..

    System.out.println("\nThe amount paid, in cents: ");
    amountPaid = cashregister.nextInt();
    changeDue = amountPaid - amountDue;