using System;

    using System.Collections.Generic;

    using System.Linq;

    using System.Reflection;

    using System.Text;

    using System.Threading.Tasks;

​

    namespace BookStore

    {

        internal class Program

        {

            static void Main(string[] args)

            {

                Console.WriteLine("Hello Welcome to the book store! \n What would you like to buy?");

                Console.WriteLine("[1] Book ");

                Console.WriteLine("[2] Pencils");

                Console.WriteLine("[3] Bookmarks");

                int MainMenuSelection = int.Parse(Console.ReadLine());

            }

        }

​

        internal class Customer

        {

            private string Name;

            private string Address;

            private double MoneyGiven;

​

            public Customer(string name, string address, double money)

            {

                Name = name;

                Address = address;

                MoneyGiven = money;

            }

​

            public string NameProperties

            {

                get { return Name; }

                set { Name = value; }

            }

            public string AddressProperties

            {

                get { return Address; }

                set { Address = value; }

            }

            public double MoneyProperties

            {

                get { return MoneyGiven; }

                set { MoneyGiven = value; }

            }

        }

​

        internal class Book

        {

            private string Title;

            private string Author;

            private int DatePublished;

​

            public Book(string title, string author, int datePublished)

            {

                Title = title;

                Author = author;

                DatePublished = datePublished;

            }

​

​

            public string TitleProperties

            {

                get { return Title; }

            }

            public string AuthorProperties

            {

                get { return Author; }

            }

​

            public int DatePublishedProperties

            {

                get { return DatePublished; }

            }

        }

    }

​