yet again, assignment time, im 75% done w/this one, i have a question though, im trying to define some of the member functions in this class i was given and im kinda at a loss for what im supposed to do (kinda like usual)

here's what it says to do in the assignment: Define all the functions specified in the Point class described above. Note that inline functions must be specified in the header file containing the class declaration “assignment7.h”. Note that you may to modify the constructor and destructor functions from the previous assignment to keep track of the static variable.
whats he talking about inline functions? and how does that relate to the operator+, -, += etc.???

thanks
//including both .h && .cpp files