AcornPublishing_essential-csharp-7e/EssentialCSharp-8.0/src/Chapter04/Listing04.56.Directives.cs
namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter04.Listing04_56
{
    public class Program
    {
        public static void Main()
        {
#if LINUX
            // ...
#elif WINDOWS
            // ...
#endif
        }
    }
}
