using System;

using System.Threading.Tasks;

using System.IO;

using System.Text;

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine(MyModule.CheckModulus());

        MyModule.Increment();

        Console.WriteLine(MyModule.CheckModulus());

        MyModule.Increment();

        MyModule.Increment();

        MyModule.Increment();

        MyModule.Increment();

        MyModule.Increment();

        Console.WriteLine(MyModule.CheckModulus());

        var c = MyModule.getIntAsync().Result;

        Console.WriteLine(c);

    }

}

​

​

public static class MyModule

{

    private static int iCount = 0;

    public static void Increment()

    {

        iCount++;

    }

    public static bool CheckModulus()

    {

        return iCount % 6 == 0;

    }

    public async static Task<int> getIntAsync()

    {

        using (var ms = new MemoryStream(Encoding.ASCII.GetBytes("foo"))) 

        {

            var buffer = new byte[1024];

            var count = await ms.ReadAsync(buffer, 0, 3);

            return count;

        }

​

    }

}

​

​