using System;

using System.Threading.Tasks;

public class Program

{

    public static async void Main()

    {

        // Wait

        var t0 = new Task(() => {

            Console.WriteLine("Task 0");

        });

        t0.Start();

        t0.Wait(1000); // wait 1000 ms

        // .Result

        var t1 = new Task<int>(() => {

            Console.WriteLine("Task 1");

            return 42;

        });

        t1.Start();

        var result = t1.Result;

        Console.WriteLine("Result: {0}", result);

        // Wait with timeout

        var t2 = new Task(() => {

            Console.WriteLine("Task 2");

        });

        t2.Start();

        var t3 = new Task(() => {

            Console.WriteLine("Task 3");

        });

        t3.Start();

        Task.WaitAll(new Task[] { t2, t3 }, 2000); // timeout - 2000 ms

        // One of task

        var t4 = new Task(() => {

            Console.WriteLine("Task 4");

        });

        t4.Start();

        var t5 = new Task(() => {

            Console.WriteLine("Task 5");

        });

        t5.Start();

        Task.WaitAny(new Task[] { t4, t5 }, 2000);

        // async

        var t6 = new Task(() => {

            Console.WriteLine("Task 6");

        });

        t6.Start();

        var t7 = new Task(() => {

            Console.WriteLine("Task 7");

        });

        t7.Start();

        await Task.WhenAll(new Task[] {t6, t7 });

    }

}