//DayOfYear Declaration File (header file) 
#include <iostream>
using namespace std;

class DayOfYear
{
//The function is a friend function of DayOfYear
//Therefore it can access private (and protected) 
//members 
friend bool IsSame (DayOfYear one, DayOfYear another);

public:
    DayOfYear(); //default constructor 
    DayOfYear(int m,int d); //constructor  that takes two paramters 

    void input( );
    void output( );

    void set(int new_month, int new_day);
    //Precondition: new_month and new_day form a possible date.
    //Postcondition: The date is reset according to the arguments.

    int get_month( );
    //Returns the month, 1 for January, 2 for February, etc.

    int get_day( );
    //Returns the day of the month.
private:
    void check_date( );
    int month;
    int day;
};