Order of static variable declaration

Question

I have this this two codes:

private static int a = 5;
private static int b = a;

static void Main(string[] args)
{
    Console.WriteLine(b);
}

And

private static int b = a;
private static int a = 5;

static void Main(string[] args)
{
    Console.WriteLine(b);
}

Please explain to me why in the first case output is 5, but in the second one output is 0

@WiktorZychla oh,yes, thank you. I was looking for something like that but didn't find.Shall I delete the question or somebody will just close it? — Samvel Petrosov, May 17 '17 at 18:35

score 9 · Accepted Answer · answered May 17 '17 at 18:33

In the second case compiler will generate the following static constructor for type:

static Program()
{
   // Note: this type is marked as 'beforefieldinit'.
   Program.b = Program.a;
   Program.a = 5;
}

So, a equals 0 when it assign to b. Then a set to 5

1 Answers1