Console.WriteLine("static constructor called");
public circle(int radius){
Console.WriteLine("instance constructor called");
public static void printarea(){
Console.WriteLine("area of circle will be");
return circle.pi*this.radius*this.radius;
public static void Main()
Console.WriteLine("area of circle:{0}",area);
circle c2=new circle(11);
Console.WriteLine("area of circle:{0}",area1);