#include <iostream>

//OCSALY        --         Access Controls in CPP         -- IDE : CLion


class myDateAndTime { // PUBLIC AS DEFAULT
    int year;
public:
    int get_year() {
        return year;
    }

    void add_year() {
        year++;
    }

    bool set_year(int new_year) {
        if (new_year < 2019) return false;
        year = new_year;
        return true;
    }



};

int main() {

    myDateAndTime clock;
    if (!clock.set_year(2018)) {
        clock.set_year(2019);
    }
    clock.add_year();
    printf("year : %d\n", clock.get_year());

    return 0;
}