using System;

public class Program

{

    public static void Main()

    {

        State state1 = new State();

        State state2 = new State();

        state2.x = 1;

        state2.y = 2;

        state1 = state2; 

        state2.x = 5; // state.x = 1 ПО ПРЕЖНЕМУ

        Console.WriteLine(state1.x); // 1

        Console.WriteLine(state2.x); // 5

        Country country1 = new Country();

        Country country2 = new Country();

        country2.x = 1;

        country2.y = 4;

        country1 = country2;

        country2.x = 7; // теперь и country1.x = 7 так как обе ссылки и country1 и country2

                        // указывают на один объект в хипе

        Console.WriteLine(country1.x); // 7

        Console.WriteLine(country2.x); // 7     

    }

}

​

struct State

{

    public int x;

    public int y;

    public Country country;

}

class Country

{

    public int x;

    public int y;

}