#include <iostream>

enum Month {
    January,
    February,
    March
};

struct Date {
    int day;
    Month month;
    int year;
};

bool is_bday_february(Date birthday)
{
    return birthday.month == February;
}
int main()
{
    Date d1{1, February, 2011};
    std::cout << std::boolalpha << is_bday_february(d1) << '\n';
    Date d2{1, March, 2011};
    std::cout << std::boolalpha << is_bday_february(d2) << '\n';
}