If I had a Building project...and a Building was made up of ADTs such as Rooms, Hallways, etc. Where would I put these different files? Would I just make a Building project and have all these different files in the same source and header folder? Or do people make new projects for each ADT? And if I had a Bathroom object that was a subclass of Room, do you just place Bathroom files in the same folder as Room files? I know everyone might have their own way of doing it but I figure there must be a general way of handling it when people create large projects. Or could someone refer to a website or anything that could help me out?