使用 C# 更改計算器

Question

我正在嘗試編寫一個程序來獲取支付的價格和金額並輸出零錢面額。 我遇到以下問題。

• 我還希望只打印適用的零錢面額（即，如果零錢為 71，則只顯示 FithyBills =1、TwentyBills=1 和 Bills =1 並忽略其余部分）。 目前顯示全部，其他記錄為十張=0，以此類推）。

這是代碼

using System;

namespace ChangeCalulator
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.Write("Item Price: ");
            int price = Convert.ToInt32(Console.ReadLine());
            Console.Write("Amount Paid: ");
            int paid = Convert.ToInt32(Console.ReadLine());
            while (paid < pice)
            {
                Console.WriteLine("You have paid less than the price");
                Console.Write("Paid: ");
                paid = Convert.ToInt32(Console.ReadLine());

            }
            decimal changeamount = paid - price;

            Change change = new Change(changeamount);
            //This displays the change based on each denominantion
            Console.WriteLine($"Hundred SEK Bills: {change.HundredBills}");
            Console.WriteLine($"Fifty SEK Bills: {change.FiveBills}");
            Console.WriteLine($"Twenty SEK Bills: {change.TwentyBills}");
            Console.WriteLine($"Ten SEK Bills: {change.TenBills}");
            Console.WriteLine($"Five SEK Bills: {change.FiveBills}");
            Console.WriteLine($"One SEK: {change.Bills}");

            Console.ReadKey();
        }
    }
    //The Change class  will create a public integer variable for each denomination and store the values.
    public class Change
    {
        private int changeamount;

        public int HundredBills { get; }
        public int FiftyBills { get; }
        public int TwentyBills { get; }
        public int TenBills { get; }
        public int FiveBills { get; }
        public int Bills { get; }
        //This calculates the number of each denomination the amount equals
        public Change(decimal price)
        {
            HundredBills = (int)(changeamount / 100);
            price %= 100;

            FiftyBills = (int)(changeamount / 50);
            price %= 50;

            TwentyBills = (int)(changeamount / 20);
            price %= 20;

            TenBills = (int)(changeamount / 10);
            price %= 10;

            FiveBills = (int)(changeamount / 5);
            price %= 5;

            Bills = (int)(changeamount / 1);
            price %= 1;
        }
    }
}

非常感謝您對此的任何幫助。

Answer 1

在構造函數public Change(decimal price)中，您需要使用price ：

public Change(decimal price)
{
    HundredBills = (int)(price / 100);
    price %= 100;

    FiftyBills = (int)(price / 50);
    price %= 50;

    TwentyBills = (int)(price / 20);
    price %= 20;

    TenBills = (int)(price / 10);
    price %= 10;

    FiveBills = (int)(price / 5);
    price %= 5;

    Bills = (int)(price / 1);
    price %= 1;
}

然后，您可以刪除不需要的changeamount字段。

工作演示： https://dotnetfiddle.net/NbyZPc

至於不打印 0 金額，一個簡單的if (theValue > 0)檢查每個 WriteLine 應該可以完成。