#include <iostream>
#include <string>
using namespace std;
 
class Pet {
   public:
      Pet(string petName = "Unnamed", int yearsOld = -1);
      void Print();
 
    private:
      string name;
      int age;
};
 
Pet::Pet(string petName, int yearsOld) {
   name = petName;
   age = yearsOld;
}
 
void Pet::Print() {
   cout << name << ", " << age << endl;
}
 
int main() {
   Pet dog;
   Pet cat("Zeus");
   Pet bird("Coco", 9);
 
   cat.Print();
   bird.Print();
   dog.Print();
 
   return 0;
}

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