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#include 
   
    //cooldog class Animal {public:    Animal(int legs, int id) : _legs(legs), _id(id) {}    void print() {        std::cout << "legs:" << _legs << "; id:" << _id << std::endl;    }private:    int _legs;    int _id;};class Exam {public:    Exam(Animal a) : _a(a) {}    Animal& operator*() {        return _a;    }    Animal* operator->() {        return &_a;    }private:    Animal _a;};int main() {    Animal my(2, 201208);    Exam ex(my);    (ex.operator->())->print();    ex->print();    (ex.operator*()).print();    (*ex).print();    return 0;}
   

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