#ifndef INTERVALH
#define INTERVALH
#include <iostream>
#include "date.h"
using namespace std;

class interval {
	const date begin;
	date end;
public:
	interval(const date& initial_begin, const date& initial_end)
		: begin(initial_begin), end(initial_end) {}

	void change_end(const date& new_end) {end = new_end;}
	void print() const {cout << "(" << begin << ", " << end << ")";}
};
#endif