using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var list = new List<LineItem>

        {

            new LineItem { Info = "two of these", Quantity = 2 },

            new LineItem { Info = "one of these", Quantity = 1 }

        };

        foreach( var entry in list)

            Console.WriteLine(entry);

        Console.WriteLine("now I want three lines printed as for the shopping bag");

        var bag = new List<LineItem>();

        foreach( var item in list)

        {

            if ( item.Quantity == 1 )

            {

                bag.Add(item);

            }

            else

            {

                for ( var count = 0 ; count < item.Quantity ; ++ count)

                    bag.Add(item);

            }

        }

        foreach( var entry in bag)

            Console.WriteLine(entry);

    }

    internal class LineItem

    {

        public string Info {get; set;}

        public int Quantity { get; set; }

        public override string ToString() 

        {

            return $"{Quantity}x - {Info}";

        }

    }

}