I'm new on using class.
Other than declare as friend class or declare static for the specific file to share variables/functions. Is there any other way?
I have inherit few classes and wrote into few *.cpp file. I can't extern a static file, so is that mean i just only can share members through friend classes?
Use public get methods to access the member variables. Leave the variables themselves private in order to protect them from outside modification, but with a get methods, such as "const member_type getMemberName() const", you can access the variable data safely, and easily.
Make the member function a actual function. If more than one class actually needs it, then its nor correct to make it a member function for one class.
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