Interface article sample code 3

gistfile1.cs

    class PerishableItem : IProduct
    {
        #region IProduct Interface Data Members
        public string Name { get; set; }
        public double Price { get; set; }
        public double UnitPrice { get; set; }
        public uint SKU { get; set; }
        #endregion

        //Omitted Code... it's the same as above
    }

    class NonPerishableItem : IProduct
    {
        #region IProduct Interface Data Members
        string Name { get; set; }
        double Price { get; set; }
        double UnitPrice { get; set; }
        uint SKU { get; set; }
        #endregion
    }

    class Scanner
    {
        public void Scan(IProduct item)
        {
            ///TODO: Update the inventory database
            ///TODO: Add the price of this item to the order subtotal
        }

        public void CancelScan(IProduct item)
        {
            ///TODO: Update the inventory database
            ///TODO: Subtract the price of this item from the order subtotal
        }
    }