using System;

public class C{

    private int x;

    public C(int a)

    {x=a;}

    public C(C ob)

    {x=ob.x;}

    public int GetX()

    {return x;}

}

public class TestCopyCtor

{

​

    public static void Main(string[] args)

    {

            C c1=new C(10);

            C c2=new C(c1);

            Console.WriteLine(c2.GetX());

    }

}