#define MYTEST

using System;

public class MyClass

{

    static void Main()

    {

#if (DEBUG && !MYTEST)

        Console.WriteLine("DEBUG is defined");

#elif (!DEBUG && MYTEST)

        Console.WriteLine("MYTEST is defined");

#elif (DEBUG && MYTEST)

        Console.WriteLine("DEBUG and MYTEST are defined");  

#else

        Console.WriteLine("DEBUG and MYTEST are not defined");

#endif

    }

}