#include <string>
#include <iostream>

class Person {
public:
    std::string name;
    Person * mother;
    Person * father;

  virtual int blah() = 0;
};

class Employee : public Person {
public:
    int salary;

    int f() {
	return 1;
    }

  virtual int blah();
};

int Employee::blah() {
  return 7;
}

int main() {
    Person * p;
    Employee e;

    p = &e;
    p->name = "Antonio";
    e.name += " Carzaniga";

    std::cout << e.name << std::endl;

    Employee * ep = dynamic_cast<Employee *>(p);
    if (ep) {
      ep->salary = 1000;
    }
}