Here's what I suggest: First, put together some simple window interfaces -- a window with a menu bar you can use, for example (I'm assuming your programing this game in windows, not DOS, although these ideas still do apply to DOS). The reason why you want to do this is so that you can create a level editor. Basically, this level editor will allow you to design your levels then save them out to a file. Then your game can read these level files and use them appropriately (i.e fill in neccasary data structures, load images, etc.).
There are many advantages to creating levels. First off, you can create things much more quickly with a level editor. Second off, you can allow friends or other people on the project to easily create a level without hard coding it into the game. Finally, it's sort of fun to do 
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Sorry if your question is entirely different though . Maybe you could be a bit more specific.
--TheGoop
