Any Day of the Week Using the Doomsday Rule

#ifndef _DOOMSDAYDATE_H_
#define _DOOMSDAYDATE_H_

#include "DoomsdayDateConst.h"

class DoomsdayDate
{

public:

    //-----------------------------------------------------
    // JulianBeforeGregorian refers to the weird dates
    // between October 5-14, 1582 which were deleted from
    // the Gregorian calendar.  Technically the days never
    // existed.  The default is false which sets the date
    // as invalid.  
    //-----------------------------------------------------
	DoomsdayDate(bool JulianBeforeGregorian = true);
    DoomsdayDate(int month, int day, int year, bool ad=true)
    {
        Set(month, day, year, ad);
    }

    DoomsdayDate(const DoomsdayDate& dd)
    {
        copy_(dd);
    }
    const DoomsdayDate& operator=(const DoomsdayDate& dd)
    {
        copy_(dd);
        return *this;        
    }

    bool AD() { return ad_; }
    bool BC() { return !ad_; }
    bool Set(int month, int day, int year, bool ad=true);
    bool SetFirst(int weekday, int month, int year);
    bool SetFourth(int weekday, int month, int year);
    bool SetSecond(int weekday, int month, int year);
    bool SetThird(int weekday, int month, int year);
    const char* WeekdayStr(int weekDay);
    const char* WeekdayStr() { return WeekdayStr(Weekday()); }
    int GetDay() { return day_; }
    int GetMonth() { return month_; }
    int GetYear() { return year_; }
    int Weekday();    
    void Print();

private:

    void copy_(const DoomsdayDate& dd)
    {
        month_ = dd.month_;
        day_ = dd.day_;
        year_ = dd.year_;
        ad_ = dd.ad_;
        gregorian_ = dd.gregorian_;
        valid_ = dd.valid_;
        useJulianBeforeGregorian_ = dd.useJulianBeforeGregorian_;
        weekday_ = dd.weekday_;
    }
    int DoomsdayCentury(int century);
	int DoomsdayMonth(int month);
    bool Gregorian(int month, int day, int year);
    bool LeapYear(int year);

    int month_;
	int day_;
	int year_;
    int weekday_;
	bool ad_;
	bool gregorian_;
	bool valid_;
    bool useJulianBeforeGregorian_;
};

#endif