Please can someone help m with this, or tell me where I can find my answers.
With classes you have defined yourself that you would like reuse, do you have to include the interface, implementation etc. in the project it is being used in or can it be included like a pre-defined class e.g #include<string>.
You would firstly need to include the file in your current project and then include the directive #include ".\myClass.h" - assuming that myClass.h is the header file for your class, and that it resides within the same folder as your current project files.