using System;

using System.Threading;

using System.Threading.Tasks;

public class Program

{

    public static void Main()

    {

        //DetachedTask();

        //ParentWaitingForDetachedTask();

        //CreatingAttachedChildTask();

        PreventChildFromAttaching();

    }

    private static void DetachedTask() 

    {

        var parentTask = Task.Factory.StartNew(() => {

            Console.WriteLine("Parent task executing");

            var childTask = Task.Factory.StartNew(() => {

                Console.WriteLine("Child task executing");

                Thread.SpinWait(500000);

                Console.WriteLine("Child task completed");

            });