//Klasa 1
namespace ShoppingCart
{
    public class Product
    {
        public string Name { get; set; }
        public string Category { get; set; }
        public float Price { get; set; }

        public Product(string name, string cat, float price)
        {
            Name = name;
            Category = cat;
            Price = price;
        }

        public override string ToString()
        {return Name;}}}
//Klasa 2
        public class ProductItem
    {   public Product Product { get; set; }
        public int Quantity { get; set; }

        public ProductItem(Product p, int q)
        {
            Product = p;
            Quantity = q;
        }

        public override string ToString()
        {
            return String.Format("{0} {1:0.0} x {2:0.0} = {3:0.0}", Product.Name, Quantity, Product.Price, Quantity *        Product.Price); }}}