using System;

public class Program

{

    public int a = 3;

    public int b;

    public static void notDestroy()

    {

        Console.WriteLine("halo world");

    }

}

​

public class Try

{

    publicstatic void Main()

    {

        Program prog = new Program();

        prog.a = 0;

        prog.b = prog.a;

        Console.WriteLine(prog.b + "");

    }

}