#include <iostream>
#include <string>

using namespace std;

class Animal {
    public:
        string name;
        float weight;
        float age;
};

class Dog : public Animal {
    public:
        Dog(string _name, float _weight, float _age) {
            name = _name;
            weight = _weight;
            age = _age;
        }
        void bark() {
            cout << name << " barked!" << endl << endl;
        }
        void about() {
            cout <<
                "Name: " << name << endl <<
                "Age: " << age << " years" << endl <<
                "Weight: " << weight << " pounds" << endl << endl;
        }
};

int main() {
    Dog fred("Fred", 100, 7);
    fred.bark();
    fred.about();
}