static void Main(string[] args)
{
Box Box1 = new Box();
Box Box2 = new Box();
Box1.SetHeight(15.0);
Box1.SetLength(16.0);
Box1.SetBreadth(17.0);
Box2.SetHeight(11.0);
Box2.SetLength(13.0);
Box2.SetBreadth(17.0);
Console.WriteLine("Box 1 Volume : "+Box1.CalVolume());
Console.WriteLine("Box 2 Volume : " + Box2.CalVolume());
Console.ReadKey();
}