public static void Main()
public interface IProduct
double Weight { get; set; }
int WaistSize { get; set; }
public class Jacket : IProduct
public int ID { get; set; }
public double Weight { get; set; }
public int Stock { get; set; }
public int Inseam { get; set; }
public int WaistSize { get; set; }
public class BaseballCap : IProduct
public int ID { get; set; }
public double Weight { get; set; }
public int Stock { get; set; }
public int Inseam { get; set; }
public int WaistSize { get; set; }
public int HatSize { get; set; }