Re: [Boost-users] [date_time] Get age in years

From: Paul Giaccone (paulg_at_[hidden])
Date: 2006-06-27 13:17:49

Jason Dolan wrote:
> I'm trying to get the age of someone in Years and/or months and/or days.
>
> I've tried:
>
> date_period dp(day_clock::local_day(), birthdate);
> cout << "You are " << dp.length() << " old" << endl;
>
> But that only calculates days.  Is there a static function available 
> that  will turn days into months. and days into years?
>   
I don't know the answer to that question, but it would have to be a 
function of not only the age in days but also the birth date.

A person born on 1 January 2003 is 365 days old on their first birthday, 
while someone born on 1 January 2004 is 366 days old on their first 
birthday. On their first birthdays, each of them is a year old, but the 
second person is a day older than the first. So simply dividing by 365 
and using the remainder for the days in the part-year would not be 
sufficient.