c++ - Multiple files, same namespace -

i building library consists of many different classes , files related thinking putting them in same namespace idea; allows me use less risky generic/simple class names since name collision inside namespace not issue.

is process of using same namespace many different files simple putting classes inside same-named namespace?

 classa.h, classb.h, classc.h, etc contain this:  namespace whatever{  ...class definition } 

yes can surely move ahead idea. if use same namespace name in different files automatically clubbed one.