using System;

using System.Threading.Tasks;

using System.Diagnostics;

public class Program

{

    public static async Task Main()

    {

        Stopwatch sw = Stopwatch.StartNew();

        Task<string> coffeeTask =  MakeCoffeeAsync();

Task<string> breadTask =  ToastBreadAsync();

Task<string> jamTask =  ApplyJamToBreadAsync();

​

await Task.WhenAll(coffeeTask, breadTask, jamTask);

​

string coffeeResult = await coffeeTask;

string breadResult = await breadTask;

string jamResult = await jamTask;

Console.WriteLine(coffeeResult);

Console.WriteLine(breadResult );

Console.WriteLine(jamResult );

        sw.Stop();

        Console.WriteLine(sw.Elapsed);

    }

    public static async Task<string> MakeCoffeeAsync()

{

    await Task.Delay(3000);

    return("Coffee is Ready");           

}

​

public static async Task<string> ToastBreadAsync()

{

    await Task.Delay(2000);

    return ("Bread is Toasted");

}

​

public static async Task<string> ApplyJamToBreadAsync()

{

    await Task.Delay(1000);

    return ("Jam added to Bread");

}

}