C++: Multiple definition error for global functions in the header file

Question

This function is global and is defined in the header file (temporarily I want to keep it there).

The header file also constitutes a particular class which has i

Answer 1

For a global function defined in a header file, declaring it within an un-named namespace should/will also work. According to C++ How to Program by Deitel, in C++ an unnamed namespace is preferable to static.

So you could do this:

// \file GlobalFunctions.h

namespace  // an un-named namespace
{

void GlobalFunctionOne() {...implementation...}

} // end un named namespace