#ifndef DATEH
#define DATEH
#include <iostream>
using namespace std;

class date;

class timebomb {
	int sum;
	bool ticking;   //true if this timebomb is still ticking
	timebomb(int initial_sum): sum(initial_sum), ticking(true) {}
public:
	~timebomb() {
		if (ticking) {
			cerr << "forgot to divide the sum of two dates by 2\n";
		}
	}

	const date operator/(int n);
	friend timebomb operator+(const date& d1, const date& d2);
};

class date {
	static const int length[];
	static const int    pre[];

	int day;
	date(int initial_day): day(initial_day) {}
public:
	enum month_type {
		january = 1, february, march, april, may, june,
		july, august, september, october, november, december
	};

	date(int month, int day, int year);
	void print() const;

	friend timebomb operator+(const date& d1, const date& d2);
	friend const date timebomb::operator/(int n);
};

inline timebomb operator+(const date& d1, const date& d2) {
	return d1.day + d2.day;
}

inline date midpoint(const date& d1, const date& d2) {
	return (d1 + d2) / 2;   //return operator+(d1, d2).operator/(2);
}
#endif