#include <string>
#include <iostream>

class BaseClass {
 public:
  int get_member() { return member_; }
  std::string get_class_name() {
    return "BaseClass";
  };

 private:
  int member_;
};

class SubClass: public BaseClass {
 public:
  std::string get_class_name() {
    (void) subclass_data_;
    return "SubClass";
  }

 private:
  int subclass_data_;
};

void print_class_name(BaseClass& base) {
  std::cout << base.get_class_name()
            << ' ' << base.get_member()
            << '\n';
}

int main() {
  BaseClass base_class;
  SubClass subclass;
  print_class_name(base_class);
  print_class_name(subclass);
}