DateCalenedaristice

#include <iostream>
#include <conio.h>

using namespace std;

class DataCalendaristica {
private:
    int zi;
    int luna;
    int an;
public:
    DataCalendaristica(int _zi = 1, int _luna = 1, int _an = 1700);

    static bool isA_ValidDate(int _zi, int _luna, int _an);

    void readDate();

    void displayDate();

};

//constructor de initializare
DataCalendaristica::DataCalendaristica(int _zi, int _luna, int _an) {
    zi = _zi;
    luna = _luna;
    an = _an;
}

//Functie pentru verificare datei
bool DataCalendaristica::isA_ValidDate(int _zi, int _luna, int _an) {
    int nrZileLuna[12] = { 31,28,31,30,31,30,31,31,30,31,30,31 };

    if (_an % 4 == 0) {
        nrZileLuna[1] = 29;
    }

    if (_luna > 12 || _zi > nrZileLuna[_luna - 1] || _luna < 1 || _zi < 1) {
        return false;
    }
    else {
        return true;
    }
}

void DataCalendaristica::readDate() {

    cout << "Zi : ";
    cin >> zi;
    cout << "Luna : ";
    cin >> luna;
    cout << "An : ";
    cin >> an;

}

//afisarea unei date
void DataCalendaristica::displayDate() {
    int format;

    if (isA_ValidDate(zi, luna, an)) {
        do {
            cout << "Introduceti tipul formatului : \n";
            cout << "1. zz/ll/aaaa \n";
            cout << "2. ll/zz/aaaa \n";
            cout << "3. aaaa/ll/zz \n";
            cin >> format;

        } while (format < 1 || format > 3);

        switch (format) {
        case 1:
            cout << "\nData este : \n";
            cout << "\n" << zi << "/" << luna << "/" << an << "\n";
            break;
        case 2:
            cout << "\nData este : \n";
            cout << "\n" << luna << "/" << zi << "/" << an << "\n";
            break;
        case 3:
            cout << "\nData este : \n";
            cout << "\n" << an << "/" << luna << "/" << zi << "\n";
            break;
        }
    }
    else {

        cout << "\nData introdusa nu este una valida!\n";
    }
}


void main() {
    DataCalendaristica data;

    data.displayDate();

    data.readDate();

    data.displayDate();

    _getch();
}