leapYear method
Given a year, return true if it's a leap year, false otherwise.
Args: year (int): the year to check
Implementation
bool leapYear(int year) {
bool leapYear = false;
bool leap = ((year % 100 == 0) && (year % 400 != 0));
if (leap == true)
leapYear = false;
else if (year % 4 == 0) leapYear = true;
return leapYear;
}