using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

​

namespace ConsoleApplication2

{

    public class Customer

    {

        public string firstName;

        public string lastName;

        public Orders[] customerOrders = new Orders[3];

​

        public int orderCount = 0;

​

        public void storeOrderInformation(string item, decimal price, int qty)

        {

            customerOrders[orderCount] = new Orders();

            customerOrders[orderCount].item = item;

            customerOrders[orderCount].price = price;

            customerOrders[orderCount].quantity = qty;

​

            orderCount++;

        }

​

        public void DisplayCustomerInformation()

        {

            Console.WriteLine("Customer name: {0} {1}", this.firstName, this.lastName);

            Console.WriteLine("Orders");

            foreach (Orders x in this.customerOrders)

            {

                Console.WriteLine("Item: {0}, Price: {1}, Quantity: {2}", x.item, x.price, x.quantity);

            }            

        }

    }

​

    public class Orders

    {

        public string item;

        public decimal price;

        public int quantity;

    }

​

    public class Program

    {

        public static void Main()

        {

​

            Customer[] customers;

            customers = new Customer[3];

            customers[0] = new Customer();

            customers[1] = new Customer();

            customers[2] = new Customer();

​

            customers[0].firstName = "Joe";

            customers[0].lastName = "Smith";

            customers[0].storeOrderInformation("Book", 3.00m, 5);

            customers[0].storeOrderInformation("Car", 13000.00m, 1);

            customers[0].storeOrderInformation("Plane", 223000.00m, 1);

​

            customers[1].firstName = "Sally";

            customers[1].lastName = "Jones";

            customers[1].storeOrderInformation("Shoes", 55.00m, 5);

            customers[1].storeOrderInformation("Dress", 130.00m, 2);

            customers[1].storeOrderInformation("Coat", 100.00m, 1);

​

​

            customers[2].firstName = "Rick";

            customers[2].lastName = "White";

            customers[2].storeOrderInformation("Jacket", 155.00m, 1);

            customers[2].storeOrderInformation("Pants", 86.00m, 2);

            customers[2].storeOrderInformation("Razor", 13.00m, 10);

​

​

            foreach (Customer x in customers)

            {

                x.DisplayCustomerInformation();

                Console.Write('\n');

            }

​

            Console.ReadLine();         

            ProcessPayment();

​

        }

        public static void ProcessPayment()

            {

                Console.WriteLine("Enter Payment Method...");

                Console.WriteLine("1 for Master Card \n2 for Visa Card \n3 for Paypal");

                Console.ReadLine();

            }

        interface Ipay

        {

            int GetPayment();

        }

        class MasterCard : Ipay

        {

            public int GetPayment()

            {

                int MasterCardPayment = 0;

                MasterCardPayment++;

                return MasterCardPayment;

            }

        }

        class VisaCard : Ipay

        {

            public int GetPayment()

            {

                int MasterCardPayment = 0;

                MasterCardPayment++;

                return MasterCardPayment;

            }

        }

        class PayPal  : Ipay

        {

            public int GetPayment()

            {

                int MasterCardPayment = 0;

                MasterCardPayment++;

                return MasterCardPayment;

            }

        }

​

    }

​

}