#ifndef DATE_H
#define DATE_H

#include <iostream>
  
class Date
{
public:
  Date(int y, int m, int d);

  bool is_leap_year() const;
  int days_in_month() const;
  void next_date();

  friend std::ostream& operator<<(std::ostream & os, Date const& d);

private:
  int year;
  int month;
  int day;
};

#endif