static void Main(string[] args)
{
Base baseOb = new Base();
Derived1 dOb1 = new Derived1();
Derived2 dOb2 = new Derived2();
Base baseRef; // a base class reference
baseRef = baseOb;
baseRef.Who();
baseRef = dOb1;
baseRef.Who();
baseRef = dOb2;
baseRef.Who();
//////////////////////////////////////////////////
TwoDShape[] shapes = new TwoDShape[5];
shapes[0] = new Triangle("right", 8.0, 12.0);
shapes[1] = new Rectangle(10);
shapes[2] = new Rectangle(10, 4);
shapes[3] = new Triangle(7.0);
shapes[4] = new TwoDShape(10, 20, "generic");
for (int i = 0; i < shapes.Length; i++)
{
Console.WriteLine("object is " + shapes[i].name);
Console.WriteLine("Area is " + shapes[i].Area());
Console.WriteLine();
}
}
public TwoDShape(TwoDShape ob)
{
Width = ob.Width;
Height = ob.Height;
name = ob.name;
}
