static void Main(string[] args)
{
Circle c1 = new Circle(5);
float Area = c1.CalculateArea();
Console.WriteLine("Area is = {0}", Area);
Circle c2 = new Circle(6);
float Area1 = c2.CalculateArea();
Console.WriteLine("Area1 is = {0}", Area1);
//static members are invoked using the name
//of the class and instance mebers are invokked using
//an object of the class
//declaring an intance static saves memory
//To initialize an instance field we use an
//instance constructor to initialie a static field we use
//a static constructor
}
