using System;

public class Program

{

    public static void Main()

    {

        ChildClass child = new ChildClass();

        child.print();

    }

}

public class ParentClass

{

    public ParentClass()

    {

        Console.WriteLine("Parent constructor");

    }

    public void print()

    {

        Console.WriteLine(" i am a Parent class");

    }

}

public class ChildClass : ParentClass

{

public ChildClass()

{

Console.WriteLine("child constructor");

}

}