int day_of_year(date d); // Number of days since beginning of year // January 1 is day 1 (not 0) void check_age_and_birthday(date birthdate, date

// Number of days since beginning of year // January 1 is day 1 (not 0)void check_age_and_birthday(date birthdate, date today);// Output: "You are __ years old and this is your birthdayn"or "You are __ years old and this is not your birthdayn"void submit_status(date start, date end, date submit);// Prints ""Submission not accepted - too earlyn" if submit < start;"Submission not accepted too - laten" if end < submit;"Submission acceptedn" otherwise.