async sample

using System;
using System.Threading.Tasks;

class Program
{
    static void Main()
    {
        while (true)
        {
            // Start computation.
            Example();
            // Handle user input.
            string result = Console.ReadLine();
            Console.WriteLine("You typed: " + result);
        }
    }

    static async void Example()
    {
        int t = await Task.Run(() => Allocate());
        System.Console.WriteLine($"result {t}");
    }

    static int Allocate()
    {
        // Compute total count of digits in strings.
        int size = 0;
        for (int z = 0; z < 500; z++)
        {
            for (int i = 0; i < 100_000; i++)
            {
                string value = i.ToString();
                size += value.Length;
            }
        }
        return size;
    }
}