Create a console app with the following code. (You will need to set the language version to C# 7.1 or greater)

```c# static async Task Main(string[] args) { var sw = new Stopwatch(); sw.Start();

await ProcessWhichTakes2Seconds();

Thread.Sleep(TimeSpan.FromSeconds(1));
Console.WriteLine("Completed 1 second delay");

sw.Stop();
Console.WriteLine($"Time taken {Math.Round(sw.Elapsed.TotalSeconds, 2)}s");
Console.ReadKey(true);

}

private static async Task ProcessWhichTakes2Seconds() { await Task.Run(() => Thread.Sleep(TimeSpan.FromSeconds(2))); Console.WriteLine("Completed ProcessWhichTakes2Seconds"); } ```

Read through the code and work out which you expect it to do. Then run it.

You should see output along the lines of Completed ProcessWhichTakes2Seconds Completed 1 second delay Time taken 3.09s

Question - how can we speed this code up?

Try

```c# static async Task Main(string[] args) { var sw = new Stopwatch(); sw.Start();

var task = ProcessWhichTakes2Seconds();

Thread.Sleep(TimeSpan.FromSeconds(1));
Console.WriteLine("Completed 1 second delay");

await task;

sw.Stop();
Console.WriteLine($"Time taken {Math.Round(sw.Elapsed.TotalSeconds, 2)}s");
Console.ReadKey(true);

} ```