ClassAnimal{private:// Change this place to public, and age and weight will become intage's public membership weight}; ClassDog:publicAnimal{// Change public to private, change it to private inheritance, change it to protected, change it to protected inheritance private:int color；; public:void setage(intn)； voids etweight(intm)； }; void dog::SetAge(intn){ age = n； } void dog::set weight(intn){ weight = m； } int main(){ Dogg = newDog()； g . SetAge(5)； g . set weight(6)； Return0} You can change the access rights and inheritance mode of ageweight yourself, which is in the comments. Compile it yourself and see the results!