do I have to include headerfiles and using namespace std in cpp or not

[adam2016]

Hi guys I'm wondering for example if I make 3 different classes a main class,a Birthday class,and a people class,now for example first of all do I need to include the using namespace std in the .h file and the .cpp file,or just the cpp file?

also when I am including a header file from the people class does it have to be used in the .cpp and the .h file or just the .h file of the Birthday class?

Thanks

[Moschops]

You can do the whole thing in a single file if you like.

Your questions suggest that you don't really understand what it means to include a header file, or understand what the compilation and linking process is.

If you understand what these are, you will be able to answer your own questions.

Start here: https://www.daniweb.com/programming/software-development/tutorials/466177/understanding-c-from-source-to-binaries