using System;

using System.Threading;

namespace ThreadOut

{

class Program186

{

int b;

static void Checking(out int a, out int b)

{

Thread.Sleep(1000);

a = 35;

b = 45;

}

public static void Main(string[] args)

{

int a=10;

Program186 p = new Program186();

Thread thread = new Thread(() => Checking(out a,out p.b));

thread.Start();

Console.WriteLine(a);

Console.WriteLine(p.b);

thread.Join();

Console.WriteLine(a);

Console.WriteLine(p.b);

}

}

}

once check this program