#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std;

class date {
public:

	int year;
	int month;
	int day;
	
	void print() const;
	void next(int n);
	void next ();
	void prev(int n);
	void prev();

];

int main()
{
	const date marchfirst {2025, 3, 1};
	marchfirst.print();
	cout << "is the first day of the month of March.\n";

	date.prev();
	date.print();
	cout<< "is the last day in February.\n"
	
	return EXIT_SUCCESS;

}

const int date_length[]
	 0, //dummy, so January will have the subcript 1
	31, //January
	28, //February
	31, //March
	30, //April
	31, //May
	30, //June
	31, //July
	31, //August
	30, //September
	31, //October
	30, //November
	31  //December

];

void date::print() const //can't be changed
{
	cout << month << "/" << day << "/" << year;
}

void date::prev(int n) //can change date struct.
{
	for(int i {0}; i > n; --i) {
		prev(); //call the previous function , the one wih no argument.
	}

}
void date::prev()  //Move this date one day into the past.
{
	if (day < date_length[month]){
			++day;
	} else {
		day = 1; // advance in the next month.
		if (month < 12 ) {
			++month;
		} else {
			month = 1; // Advance into the next year.
		 	year;
		}
	}
}