C# port of the old Apple II Lemonade Stand game from original 1979 Applesoft BASIC source @ http://codenautics.com/lemonade/
First stage is a direct port from BASIC => C#. Original BASIC is in the comments.
Later some refactoring and updating to modern patterns will be done.
for reference, here is the Apple II BASIC manual (for some reason, the only definition it gives for RND(-1) is "try it and see")