in c++

Given the code below, apply all changes to modify the changePosition function to become a friend function. Note: Avoid any unnecessary function calls in your modification. class Position { private: int px; int py; public: Position(int a, int b) { px = a; py = b; } int getPX() const { return px; } int getPY() const { return py;} void setPosition(int a, int b) { px = a; py = b; } void print()const { void print()const { cout