static void ExtendedSimpleBox()
{
Console.WriteLine("InheritedBox");
ExtendedBox box = new ExtendedBox();
Console.WriteLine("The inherited has a volume of {0}", box.GetVolume());
}
static void ExtendedSimpleBoxWithTypeCast()
{
Console.WriteLine("InheritedBox");
ExtendedBox box = new ExtendedBox(10, 10, 10);
Console.WriteLine("The inherited has a volume of {0}", box.GetVolume());
Console.WriteLine("The ExtendedBox has a double volume of {0}", box.GetDoubleVolume());
Box newBox = box as Box;
Console.WriteLine("The Box newBox, casted from box ExtendedBox has a volume of {0}", newBox.GetVolume());
}