Help plz it's computer science helpp plzzz

Some of the first computer games were created in the early 1970s by college students experimenting after hours to see what the were capable of doing.

When using a public computer or network, you should always

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