using System;

public class Program

{

    public static void Main()

    {

                    Order[] ordlist = new Order[4];

            ordlist[0] = new Order("Lahori Chargha", 8.75, 2);

            ordlist[1] = new Order("Lasi", 1.5, 1);

            ordlist[2] = new Order("Fried Fish", 10.99, 3);

            ordlist[3] = new Order("Coke", 2.50, 1);

​

            Customer[] cuslist = new Customer[3];

            cuslist[0] = new Customer("Tahir", "Minhas");

            cuslist[0].cusordlist[0] = ordlist[0];

            cuslist[0].cusordlist[1] = ordlist[1];

            cuslist[1] = new Customer("David", "Erman");

            cuslist[1].cusordlist[0] = ordlist[2];

            cuslist[1].cusordlist[1] = ordlist[1];

            cuslist[2] = new Customer("Umer", "Khan");

            cuslist[2].cusordlist[0] = ordlist[2];

            cuslist[2].cusordlist[1] = ordlist[3];

            //IPayment visa = new Visa();

            IPayment[] pay = new IPayment[3];

            double Vtotal=0;

            double Mtotal=0;

            double Ptotal=0;

            double t1 = 0;

            pay[0] = new Visa();

            pay[1] = new MC();

            pay[2] = new PPal();

            //for (int i = 0; i < 3; i++)

            int i = 0;

            foreach(Customer c in cuslist)

            {

                Console.WriteLine("Customer # {0}\n{1} {2}\n", i + 1, c.fname, c.lname);

                Console.WriteLine("{0}\t{1:C}", c.cusordlist[0].orderdescription, c.cusordlist[0].priceofitem);

                Console.WriteLine("\tSubTotal ({0}x{1})\t{2:C}", c.cusordlist[0].priceofitem, c.cusordlist[0].quantity, c.cusordlist[0].priceofitem * c.cusordlist[0].quantity);

                Console.WriteLine("{0}\t{1:C}", c.cusordlist[1].orderdescription, c.cusordlist[1].priceofitem);

                Console.WriteLine("\tSubTotal ({0}x{1})\t{2:C}", c.cusordlist[1].priceofitem, c.cusordlist[1].quantity, c.cusordlist[1].priceofitem * c.cusordlist[1].quantity);

                Console.WriteLine("--------------------------------------");

                Console.WriteLine("Total \t\t\t\t {0:C}\n\n\r", c.cusordlist[0].priceofitem * c.cusordlist[0].quantity + c.cusordlist[1].priceofitem * c.cusordlist[1].quantity);

                t1 = c.cusordlist[0].priceofitem * c.cusordlist[0].quantity + c.cusordlist[1].priceofitem * c.cusordlist[1].quantity;

                pay[i].total = t1;

                //Console.WriteLine("Payment Recieved {0}", pay[i].total);

                pay[i].payment();

                //Console.ReadKey();

                i++;

            }

            foreach (IPayment p in pay)

            {

                if (p is Visa)

                    Vtotal += p.total;

                else if (p is MC)

                    Mtotal += p.total;

                else

                    Ptotal += p.total;

            }

​

            Console.WriteLine("\n\nTotal Amount Recieved: {0:C}\n\nVisa Card  : {1:C}\n\rMaster Card: {2:C}\n\rPaypal     : {3:C}\n\r ",Vtotal+ Mtotal+ Ptotal, Vtotal, Mtotal, Ptotal);

            //Console.ReadKey();

    }

}

public class Customer //Customer Data class

    {

        public string fname; //First Name of Customer

        public string lname; //last Name of Customer

        public Order[] cusordlist = new Order[2]; //order class object for customer order.

​

        public Customer()

        {

            this.fname = "Tahir";

            this.lname = "Minhas";

        }

​

        public Customer(string fn, string ln)

        {

            fname = fn;

            lname = ln;

        }

​

​

    }

    public class Order

    {

        public string orderdescription;//Description of item ordered

        public double priceofitem; //Priced of the item

        public int quantity; //Quantity of item ordered. 

​

        public Order(string orddes, double price, int quan)

        {

            orderdescription = orddes;

            priceofitem = price;

            quantity = quan;

        }

    }

    interface IPayment

    {

        double total { get; set; }

        void payment();

    }

    public class Visa : IPayment

    {

        double _total;

        public Visa()

        {

            _total = 0;

        }

        public double total

        {

            get

            {

                return _total;

            }

            set

            {

                _total = value;

            }

        }

​

        public void payment()

        {

            Console.WriteLine("Thank You for Payment\n Amount {0:C2} will appear on your VISA Card Statment.", total);

        }

    }

    public class PPal : IPayment

    {

        double _total;

        public PPal()

        {

            _total = 0;

        }

        public double total

        {

​

            get

            {

                return _total;

            }

            set

            {

                _total = value;

            }

        }

​

        public void payment()

        {

            Console.WriteLine("Thank You for Payment\n Amount {0:C2} will appear on your PayPal and its attach Card Statment.", total);

        }

    }

    public class MC : IPayment

    {

        double _total;

        public MC()

        {

            _total = 0;

        }

        public double total

        {

​

            get

            {

                return _total;

            }

            set

            {

                _total = value;

            }

        }

​

        public void payment()

        {

            Console.WriteLine("Thank You for Payment\n Amount {0:C2} will appear on your Master Card Statment.", total);

        }

    }