class Student: public Person {
  int aem;
public:
  Student(const char *first, const char *last, int id);
};

Student::Student(const char *first, const char *last, int id) try : Person(first, last), aem(id) {
  cout << "Student constructor" << endl;
} 
catch(BadName& ex) {
  cout << "--> firstname deleted!" << endl;
  delete firstname;
}