using System.Collections;

using System;   

​

public class Program

{

    public static void Main()

    {

            string[] products = { "Cheese", "Chocolate", "Computer", "Food" };

            LinkedList<string> items = new LinkedList<string>(products);

​

            Console.WriteLine("Search for a product: ");

            string searchterms = Console.ReadLine();

            if (items.Contains(searchterms))

            {

                Console.WriteLine("Yay, we're in stock for that product!");

            }

            else

            {

                Console.WriteLine("Sorry we don't have that product.");

            }

    }

}