static void Main1(string[] args)
{
//BaseClass b1 = new BaseClass();
// b1.Display1(25);
//Derived d1 = new Derived();
// d1.Display1(25);
BaseClass b = new BaseClass();
b.Display2();
b.Display3();
BaseClass c = new Derived();
c.Display2(); //it is at early binding...mathod not search at Derived class
c.Display3(); //it is late binding...base class method is virtual ....due to which it call derived class method
BaseClass d = new subDerived1();
d.Display3();
BaseClass e = new subDerived();
e.Display3();
Console.ReadLine();
}
static void Main(string[] args)
{
BaseClass b1 = new Derived();
BaseClass b3 = new subDerived();
BaseClass b2 = new Derived1();
BaseClass b4 = new subDerived1();
BaseClass b5 = new subsubDerived1();
BaseClass b6 = new subsubDerived2();
b1.Display3();
b2.Display3();
b3.Display3();
b4.Display3();
b5.Display3();
b6.Display3();
Console.ReadLine();
}