using System;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{

    public void Main()

    {

        // Simulate order

        Order order = new Order

        {

            TableNumber = "Table 1",

            Products = new List<Product>

            {

                new Product { Name = "Item 1", Price = 100.00m, Quantity = 3},

                new Product { Name = "Item 2", Price = 89.00m, Quantity = 2},

                new Product { Name = "Item 3", Price = 50.00m, Quantity = 1 }

            }

        };

        foreach(var p in order.Products)

        {

            Console.WriteLine(p.Name + " (Each: " + p.Price + ")" + " - Qty: " + p.Quantity + " (" + p.Total() + ")");

        }

    }

}

​

public class Order

{

    public List<Product> Products { get; set; }

​

    public string TableNumber{get;set;}

    public decimal Total()

    {

        if (Products.Any())

            return Products.Sum(x => x.Price);

        return 0.00m;

    }

​

    public Order()

    {

        Products = new List<Product>();

    }

    public void RemoveProduct()

    {

        // Implement here remove logic

    }

    public bool IsAdded(string productName)

    {

        return Products.Any(x=>x.Name.ToLower() == productName.ToLower());

    }

}

​

public class Product

{

    public string Name { get; set; }

    public decimal Price { get; set; }

    public int Quantity { get; set; }

    public decimal Total()

    {

        return Price * Quantity;

    }

}