Question

我需要编写一个java程序来计算销售交易的账单和变更。

它只能分配20s，10s，5s，1s，quarter，dimes，nickles和pennies。

如果它不必分配面额（说你的变化是50美分，它应该只分配两个季度。它不应该提到另一种货币）

我无法分配正确数量的货币，它只是分配所有货币（例如，如果它是21美元而我给收银员22，代码告诉我给.013 $ 20s ，.294美元，等等。）如果有人能帮助我，那就太好了。

double price;  // declares how much the price is
double moneyGiven; // declares how much money the cashier is given
int change; // declares how much change is given in return

System.out.println("Enter the Price of the item:");
price = IO.readDouble()*100; 
{
    {
        System.out.println("Enter the Amount Given:");
        moneyGiven = IO.readDouble()*100; 
        {
            if (moneyGiven > price) 
                System.out.println("Your Change is:");

            change = moneyGiven - price;
            int twenties = change / 2000;
            if (twenties >= 1) {
                change = change % 2000;
                System.out.println(twenties + "$20 Bills"); 
            }

            int tens = change / 1000;
            if (tens >= 1) {
                change = change % 1000;
                System.out.println(tens + "$10 Bills"); 
            }

            int fives = change / 500;
            if (fives >= 1) {
                change = change % 500;
                System.out.println(fives + "$5 Bills"); 
            }

            int ones = change / 100;
            if (ones >= 1) {
                change = change % 100;
                System.out.println(ones + "$1 Bills"); 
            }

            int quarters = change / 25;
            if (quarters >= 1) {
                change = change % 25;
                System.out.println(quarters + "Quarters"); 
            }

            int dimes = change / 10;
            if (dimes >= 1) {
                change = change % 10;
                System.out.println(dimes + "Dimes"); 
            }

            int nickles = change / 5;
            if (nickles >= 1) {
                change = change % 5;
                System.out.println(nickles + "Nickles"); 
            }

            int pennies = change / 1;
            if (pennies >= 1) {
                change = change % 1;
                System.out.println(pennies + "Pennies"); 
            }




            if (moneyGiven <= price) 
                System.out.println("Not enough!");

            if (moneyGiven == price) 
                System.out.println("There is no Change to be given.");

        }
    }
}
}
}

Answer 1

这里有些不妥之处：

在if陈述后你有分号。这将意味着总是执行大括号中的以下代码
你好像从5岁开始检查剩余部分是否大于0，而不是一个。
每个面额的输出是除法的结果，可能是小数。你需要输出这个楼层。

Answer 2

我相信我找到了答案，但它以答案的答案回答答案，即。 1.0,5.0。如何在没有.0的情况下返回答案？但是，我想在我的代码上输入任何内容：

    double price;  // declares how much the price is
    double moneyGiven; // declares how much money the cashier is given
    double change; // declares how much change is given in return

    System.out.println("Enter the Price of the item:");
    price = IO.readDouble()*100; {


    {


    System.out.println("Enter the Amount Given:");
    moneyGiven = IO.readDouble()*100; {




    if (moneyGiven > price) 


    System.out.println("Your Change is:");

    change = moneyGiven - price;
    double twenties = change / 2000;
    if (twenties >= 1) {
    change = change % 2000;
    System.out.println(Math.floor(twenties) + "$20 Bills"); }

    double tens = change / 1000;
    if (tens >= 1) {
    change = change % 1000;
    System.out.println(Math.floor(tens) + "$10 Bills"); }

    double fives = change / 500;
    if (fives >= 1) {
    change = change % 500;
    System.out.println(Math.floor(fives) + "$5 Bills"); }

    double ones = change / 100;
    if (ones >= 1) {
    change = change % 100;
    System.out.println(Math.floor(ones) + "$1 Bills"); }

    double quarters = change / 25;
    if (quarters >= 1) {
    change = change % 25;
    System.out.println(Math.floor(quarters) + "Quarters"); }

    double dimes = change / 10;
    if (dimes >= 1) {
    change = change % 10;
    System.out.println(Math.floor(dimes) + "Dimes"); }

    double nickles = change / 5;
    if (nickles >= 1) {
    change = change % 5;
    System.out.println(Math.floor(nickles) + "Nickles"); }

    double pennies = change / 1;
    if (pennies >= 1) {
    change = change % 1;
    System.out.println(Math.floor(pennies) + "Pennies"); }




    if (moneyGiven <= price) 
    System.out.println("Not enough!");

    if (moneyGiven == price) 
    System.out.println("There is no Change to be given.");

    }
        }
    }
    }

}

显示变更需要信息

2 个答案: