Soda-machine with C# help!!!

[cabalsun]

I wrote a Bank.Dll and a soda machine, and every time i try "start without debugging" I always a get a underline blue wavy error. The code below are the bank.dll and the soda-machine code. Can any 1 help me to test this code, and then tell me what i did wrong. Thank you

" CoinService service = new CoinService(); " the error line.

using System;

namespace Bank
{
    public class CoinReserve
    {
        // Fields
        private int dimes;
        private int nickels;
        private int quarters;

        // Methods
        public CoinReserve(int _nickels, int _dimes, int _quarters)
        {
            this.nickels = this.dimes = this.quarters = 0;
            if (_nickels > 0)
            {
                this.nickels = _nickels;
            }
            if (_dimes > 0)
            {
                this.dimes = _dimes;
            }
            if (_quarters > 0)
            {
                this.quarters = _quarters;
            }
        }

        // Properties
        public int Dimes
        {
            get
            {
                return this.dimes;
            }
            set
            {
                this.dimes = value;
            }
        }

        public int Nickels
        {
            get
            {
                return this.nickels;
            }
            set
            {
                this.nickels = value;
            }
        }

        public int Quarters
        {
            get
            {
                return this.quarters;
            }
            set
            {
                this.quarters = value;
            }
        }
    }

    public class CoinService
    {
        // Fields
        private static CoinReserve CR = new CoinReserve(50, 50, 50);
        private decimal totalcoinreserve = (((CR.Nickels * 0.05M) + (CR.Dimes * 0.1M)) + (CR.Quarters * 0.25M));

        // Methods
        public int CalculateChange(decimal cost, decimal deposit, ref decimal change)
        {
            if (cost > deposit)
            {
                return -1;
            }
            change = deposit - cost;
            return 0;
        }

        public int CheckChange(decimal change)
        {
            if (change > 0M)
            {
                while (((change != 0M) && ((change% 0.25M) == 0M)) && (CR.Quarters != 0))
                {
                    change -= 0.25M;
                }
                while (((change != 0M) && ((change% 0.10M) == 0M)) && (CR.Dimes != 0))
                {
                    change -= 0.10M;
                }
                while (((change != 0M) && ((change% 0.05M) == 0M)) && (CR.Nickels != 0))
                {
                    change -= 0.05M;
                }
                if (change == 0M)
                {
                    return 0;
                }
            }
            return -1;
        }

        public int DepositCoins(int nickels, int dimes, int quarters)
        {
            CR.Nickels += nickels;
            CR.Dimes += dimes;
            CR.Quarters += quarters;
            this.totalcoinreserve = ((CR.Nickels * 0.05M) + (CR.Dimes * 0.1M)) + (CR.Quarters * 0.25M);
            return 0;
        }

        public int DispenseChange(decimal change)
        {
            if (change <= 0M)
            {
                return -1;
            }
            while (((change != 0M) && ((change% 0.25M) == 0M)) && (CR.Quarters != 0))
            {
                CR.Quarters--;
                change -= 0.25M;
            }
            while (((change != 0M) && ((change% 0.10M) == 0M)) && (CR.Dimes != 0))
            {
                CR.Dimes--;
                change -= 0.10M;
            }
            while (((change != 0M) && ((change% 0.05M) == 0M)) && (CR.Nickels != 0))
            {
                CR.Nickels--;
                change -= 0.05M;
            }
            this.totalcoinreserve = ((CR.Nickels * 0.05M) + (CR.Dimes * 0.1M)) + (CR.Quarters * 0.25M);
            return 0;
        }

        public void DisplayCoinReserve()
        {
            Console.Clear();
            Console.WriteLine("Nickel(s): {0}", CR.Nickels);
            Console.WriteLine("Dime(s): {0}", CR.Dimes);
            Console.WriteLine("Quarter(s): (s): {0}", CR.Quarters);
            Console.WriteLine("Total: {0,-4:c2}]", (CR.Nickels + CR.Dimes) + CR.Quarters);
        }

        // Properties
        public decimal TotalCoinReserve
        {
            get
            {
                return this.totalcoinreserve;
            }
        }
    }
}

_________________________________________________________________

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;


namespace Sodamachine
{
    public class CoinInserts
    {
        // Fields
        private int dimes;
        private int nickels;
        private int quarters;

        // Methods
        public CoinInserts(int n, int d, int q)
        {
            this.nickels = n;
            this.dimes = d;
            this.quarters = q;
        }

        // Properties
        public int Dimes
        {
            get
            {
                return this.dimes;
            }
            set
            {
                this.dimes = value;
            }
        }

        public int Nickels
        {
            get
            {
                return this.nickels;
            }
            set
            {
                this.nickels = value;
            }
        }

        public int Quarters
        {
            get
            {
                return this.quarters;
            }
            set
            {
                this.quarters = value;
            }
        }
    }

    public class CoinBox
    {
        // Fields
        private static CoinInserts CI = new CoinInserts(0, 0, 0);

        // Methods
        public int ClearCoinInsert()
        {
            CI.Nickels = 0;
            CI.Dimes = 0;
            CI.Quarters = 0;
            return 0;
        }

        public int GetChange(decimal cost, ref decimal change)
        {
            decimal num = 0M;
            num = ((0.05M * CI.Nickels) + (0.10M * CI.Dimes)) + (0.25M * CI.Quarters);
            if (num >= cost)
            {
                change = num - cost;
                return 0;
            }
            return -1;
        }

        public int InsertCoin(ref decimal total)
        {
            while (true)
            {
                total = ((0.05M * CI.Nickels) + (0.10M * CI.Dimes)) + (0.25M * CI.Quarters);
                Console.Clear();
                Console.WriteLine(" ");
                Console.WriteLine("***********************");
                Console.WriteLine("** INSERT COINS MENU **");
                Console.WriteLine("***********************");
                Console.WriteLine(" ");
                Console.WriteLine("1: ({0}) Insert a nickel", CI.Nickels);
                Console.WriteLine("2: ({0}) Insert a dime", CI.Dimes);
                Console.WriteLine("3: ({0}) Insert a quarter", CI.Quarters);
                Console.WriteLine(" ");
                Console.Write("PLEASE INSERT COINS [{0,-4:c2}] (or Q): ", (decimal)total);
                string s = Console.ReadLine();
                switch (s)
                {
                    case "Q":
                    case "q":
                        total = ((0.05M * CI.Nickels) + (0.10M * CI.Dimes)) + (0.25M * CI.Quarters);
                        return 0;

                    default:
                        int num;
                        if (int.TryParse(s, out num))
                        {
                            switch (num)
                            {
                                case 1:
                                    CI.Nickels++;
                                    break;

                                case 2:
                                    CI.Dimes++;
                                    break;

                                case 3:
                                    CI.Quarters++;
                                    break;
                            }
                        }
                        break;
                }
            }
        }

        // Properties
        public int Dimes
        {
            get
            {
                return CI.Dimes;
            }
            set
            {
                CI.Dimes = value;
            }
        }

        public int Nickels
        {
            get
            {
                return CI.Nickels;
            }
            set
            {
                CI.Nickels = value;
            }
        }

        public int Quarters
        {
            get
            {
                return CI.Quarters;
            }
            set
            {
                CI.Quarters = value;
            }
        }
    }

    public class Product
    {
        // Fields
        private decimal cost;
        private int count;
        private string name;

        // Properties
        public decimal Cost
        {
            get
            {
                return this.cost;
            }
            set
            {
                this.cost = value;
            }
        }

        public int Count
        {
            get
            {
                return this.count;
            }
            set
            {
                this.count = value;
            }
        }

        public string Name
        {
            get
            {
                return this.name;
            }
            set
            {
                this.name = value;
            }
        }
    }

    public class InventoryManager
    {
        // Fields
        private Dictionary<int, Product> inventory = new Dictionary<int, Product>();
        private static int key = 0;

        // Methods
        public void AddProduct(string name, decimal cost, int count)
        {
            Product product = new Product();
            this.inventory.Add(key, product);
            this.inventory[key].Name = name;
            this.inventory[key].Cost = cost;
            this.inventory[key].Count = count;
            key++;
        }

        public int DispenseProduct(int ProductKey)
        {
            Product local1 = this.inventory[ProductKey];
            local1.Count--;
            return 0;
        }

        public void DisplayInventory()
        {
            Console.Clear();
            Console.WriteLine(" ");
            Console.WriteLine("**PRODUCT INVENTORY **");
            Console.WriteLine(" ");
            for (int i = this.inventory.Count; i <= 0; i++)
            {
                Console.WriteLine("{0}: {1} [{2,-4:c2}]", i + 1, this.inventory[i].Name, this.inventory[i].Cost);
            }
        }

        public int SelectProduct(ref int key, ref string name, ref decimal cost)
        {
            while (true)
            {
                int num2;
                Console.Clear();
                Console.WriteLine(" ");
                Console.WriteLine("*****************************");
                Console.WriteLine("** PRODUCT SELECTION MENU: **");
                Console.WriteLine("*****************************");
                Console.WriteLine(" ");
                for (int i = 0; i < this.inventory.Count; i++)
                {
                    Console.WriteLine("{0}: {1} [{2, -4:c2}]", i + 1, this.inventory[i].Name, this.inventory[i].Cost);
                }
                Console.WriteLine(" ");
                Console.Write("PLEASE SELECT A PRODUCT (or Q):");
                string s = Console.ReadLine();
                switch (s)
                {
                    case "Q":
                    case "q":
                        Console.Clear();
                        key = -1;
                        name = "None";
                        cost = 0M;
                        return -1;
                }
                if (int.TryParse(s, out num2) && (this.inventory.ContainsKey(num2 - 1) && (this.inventory[num2 - 1].Count > 0)))
                {
                    key = num2 - 1;
                    cost = this.inventory[key].Cost;
                    name = this.inventory[key].Name;
                    return 0;
                }
            }
        }
    }

    internal class Program
    {
        // Methods
        private static void Main(string[] args)
        {
            CoinService service = new CoinService();
            CoinBox box = new CoinBox();
            InventoryManager manager = new InventoryManager();
            manager.AddProduct("Water", 1.5M, 10);
            manager.AddProduct("Coke", 1.1M, 10);
            manager.AddProduct("Pepsi", 1.5M, 10);
            manager.AddProduct("Ice Tea", 1.25M, 10);
            int key = 0;
            decimal num3 = 0M;
            string str = "";
            string str2 = "";
            decimal num4 = 0M;
            decimal change = 0M;
            while (true)
            {
                Console.Clear();
                Console.WriteLine(" ");
                Console.WriteLine("****************************");
                Console.WriteLine("** SODA MACHINE MAIN MENU **");
                Console.WriteLine("****************************");
                Console.WriteLine(" ");
                Console.WriteLine("1: Select a Product [{0}: {1,-4:c2}]", str, num3);
                Console.WriteLine("2: Insert Coins [{0,-4:c2}]", num4);
                Console.WriteLine("3: Dispense Product [{0}]", str2);
                Console.WriteLine(" ");
                Console.Write("PLEASE MAKE A MENU SELECTION [{0,-4:c2}] (or Q):", service.TotalCoinReserve);
                string s = Console.ReadLine();
                switch (s)
                {
                    case "Q":
                    case "q":
                        if (num4 > 0M)
                        {
                            Console.WriteLine(" ");
                            Console.WriteLine("Please Pickup Your Change [{0,-4:c2}]", num4);
                        }
                        return;

                    default:
                        int num;
                        if (int.TryParse(s, out num))
                        {
                            int num6;
                            switch (num)
                            {
                                case 1:
                                    num6 = manager.SelectProduct(ref key, ref str, ref num3);
                                    break;

                                case 2:
                                    num6 = box.InsertCoin(ref num4);
                                    break;

                                case 3:
                                    if (!(num3 == 0M))
                                    {
                                        if (num4 >= num3)
                                        {
                                            str2 = "";
                                            num6 = box.GetChange(num3, ref change);
                                            if (service.CheckChange(change) != 0)
                                            {
                                                str2 = "Insufficient bank reserve";
                                            }
                                            else
                                            {
                                                num6 = manager.DispenseProduct(key);
                                                num6 = service.DepositCoins(box.Nickels, box.Dimes, box.Quarters);
                                                num6 = service.DispenseChange(change);
                                                num6 = box.ClearCoinInsert();
                                                num4 = 0M;
                                                str2 = "Enjoy your " + str;
                                            }
                                        }
                                        else
                                        {
                                            str2 = "Insert more money";
                                        }
                                        break;
                                    }
                                    break;
                            }
                        }
                        break;
                }
            }
        }
    }

}

[QuackWare]

Make sure you add a reference to the .dll in your project or else your program will not recognize it. Also please use code tags next time it is kind of hard to read.

[lobo521]

pasted all code into vs and works. Only one problem: Dispense Product doesn't work when you have equal coins and product values. Probably something with CheckChange in CoinService.