using System;

public class baseclass

{

​

    public baseclass()

    {

        Console.WriteLine("Base class Default constructor");

    }

    public baseclass(int i)

    {

        Console.WriteLine("Base class Para constructor");

    }

}   

public class Program:baseclass

{

    Program()

    {

        Console.WriteLine("Child class Default constructor");

    }

    Program(int i):base(i)

    {

        Console.WriteLine("Child class Default constructor=="+i);

    }

    public static void Main()

    {

        Program p1=new Program(1);

        Console.WriteLine("Hello World");

    }

}