using System;

public class Program

{

    public static void Main()

    {

    //CREATE OBJECTS HERE

        Customer paul = new Customer("Guitar", "Paul");

        Customer gavin = new Customer("Apple Computer", "Gavin");

        paul.sendThankYou();

        paul.sendSaleNotice();

        paul.sendSaleNotice("Apple iPhones");

        var jenn = new InactiveCustomer("Laptop","Jenn", 5);

        jenn.sendRequest();

        InactiveCustomer michael = new InactiveCustomer("Desk", "Michael", 4);

        michael.sendRequest();

    }

​

    //CREATE CLASS HERE

    public class Customer

    {

        public Customer(string purchase, string name)

        {

            this.Name = name;

            this.Purchase = purchase;

        }

        public string Purchase { get; set; }

        public string Name { get; set; }

        //

        public void sendThankYou() 

        {

            Console.WriteLine("Dear {0}, thank you for purchasing the {1}. We hope you enjoy it.", Name, Purchase);

        }

        public void sendSaleNotice()

        {

            Console.WriteLine("Hello {0}, We wanted to let you know there's a sale coming up {1}.", Name, DateTime.Today);

        }

        public void sendSaleNotice(string item)

        {

            Console.WriteLine("Hello {0}, We wanted to let you know there's a sale on {1} coming up on {2}.", Name, item, DateTime.Today);

        }

    }

​

​

    //CREATE SUBCLASS HERE

    public class InactiveCustomer : Customer

    {

        public InactiveCustomer(string purchase, string name, int monthsInactive) : base (purchase, name)

        {

            this.MonthsInactive = monthsInactive;

        }

        public int MonthsInactive { get; set; }

        public void sendRequest()

        {

            Console.WriteLine("Hello {0}, We saw that you purchased a {1} about {2} months ago. We're wondering if you'd like to take a look at some of our current deals.", Name, Purchase, MonthsInactive);

        }

    }

​

​

​

}