Date Calculator Problem

[xclusive]

I'm trying to figure out a way to calculate a future date based on a given date and set amount of days to add.

For instance, if i have the date 02/06/2011 and want to add 1200 days to it. I would need to console to out put the new date.

Can someone give me some advice on what steps i should take to get this done?

[PanGalactic]

Here is one way assuming "date" is a string. Convert the string to a time_t, add 1200 days worth of seconds to it, convert back to a string. You'll need the <ctime> header. C++ does not require the strptime() (parse time string) function, but many OSes provide it as the inverse of strftime().

strptime() -> struct tm -> mktime() -> date arithmetic -> gmtime()/localtime() -> strftime().

If you are expected to do all of the date calculations yourself (leap year conversion, etc.) then this method is inappropriate because it does all the work for you.

[xclusive]

Hey PanGalactic, Thanks for the information. Do you happen to know of any reference i can use to do this conversion manually instead of using the functions?

[PanGalactic]

This subject comes up frequently on this site. You could try searching for "julian day" on this site and on Wikipedia.