using System;

struct Foo 

{ 

    public int x; 

    public int y; 

}

public class Program

{

    static void M(out Foo f)

    {

        f.x = 123;

        f.y = 456;

    }

    public static void Main()

    {

        Foo f;

        M(out f);

        Console.WriteLine(f.x + " " + f.y);

    }

}