#include <iostream> //for cout
#include <ctime>    //for the functions time and localtime
#include "date.h"
using namespace std;

const int date::length[] {
	 0,   //dummy, so that January will have subscript 1
	31,   //January
	28,   //February.  Pretend there are no leap years.
	31,   //March
	30,   //April
	31,   //May
	30,   //June
	31,   //July
	31,   //August
	30,   //September
	31,   //October
	30,   //November
	31    //December
};

date::date(int m, int d, int y)
	: day(365 * y + d - 1)
{
	for (int month {1}; month < m; ++month) {
		day += length[month];
	}
}

date::date()   //today's date
{
	const time_t t {time(nullptr)};
	const tm *const p = localtime(&t);
	day = 365 * (p->tm_year + 1900) + p->tm_mday - 1;

	for (int month {1}; month < p->tm_mon + 1; ++month) {
		day += length[month];
	}
}

ostream& operator<<(ostream& ost, const date& d)
{
	const int year {d.day / 365};
	int dayOfYear  {d.day % 365 + 1};  //1 to 365 inclusive

	int month {1};
	for (; dayOfYear > date::length[month]; ++month) {
		dayOfYear -= date::length[month];
	}

	ost << month << "/" << dayOfYear << "/" << year;
	return ost;
}

//The last two statements in the above friend function can be combined to
//return ost << month << "/" << dayOfYear << "/" << year;