using System;

public class Program

{

    public static void Main()

    {

        int number = 4;

        DerivedClass derivedClass = new(4);

        DerivedClass derivedClass2 = new();

    }

}

​

​

public class DerivedClass : BaseClass

{

    public DerivedClass()

    {

        Console.WriteLine("This is DrivedClass paramenterless Constructor");

    }   

    public DerivedClass(int parameter)

    {

        Console.WriteLine($"This is DrivedClass Constructor with parameter {parameter}");

    }   

}

​

public class BaseClass

{

    public BaseClass()

    {

        Console.WriteLine("This is BaseClass Constructor");

    }

    public BaseClass(int parameter)

    {

        Console.WriteLine($"This is BaseClass Constructor with parameter {parameter}");

    }   

}