using System;

struct  A

{

    public int x;

​

    public A(int z)

    {

        x = z;

    }

​

    public void F()

    {

        this = new A(5);

    }

}

​

public class Program

{

    public static void Main()

    {

        A a = new A(8);

        Console.WriteLine(a.x);

        a.F();

        Console.WriteLine(a.x);

    }

}