Please how do you view someone's profile picture

What key should you press and hold to select and open multiple files at one time? enter alt control esc

Does read theory have answers keys ?

4. what is the reason for including the following code snippet in the header file animal. h? #ifndef animal_h #define animal_h class animal { public: animal(); animal(double new_area_hunt); void birth(); void hunt(double new_area_hunt); void death(); double get_area_hunt() const; private: double area_hunt; }; #endif