Project structure: bin: The output executables go here, both for the app and for any tests and spikes. build: This folder contains all object files, and is removed on a clean. doc: Any notes, like my assembly notes and configuration files, are here. include: All project header files. lib: Any libs that get compiled by the project, third party or any needed in development. spike: I some smaller classes or files to test technologies or ideas. src: The application and only the application’s source files. test: All test code files.