Programming Forums > Application Development > Other Programming Languages

kompressor · Dec 6th, 2005, 7:38 AM

I have a strange question.

I have a parameter that is time, represented in seconds. I also have a structure that has seconds, minutes, hours, days,etc.

How would I go about filling the members of the structure? in your language of choice. Its the algorithim im looking for.

~k

stevengs · Dec 6th, 2005, 8:09 AM

Ask yourself how many seconds are in a minute, how many minutes in an hour, how many hours in a day, etc. This will get you going in the right direction.

kompressor · Dec 6th, 2005, 8:49 AM

I used this site as a template.

http://www.ibiblio.org/obp/thinkCS/c...ish/chap11.htm

(Toggle Plain Text)

Time makeTime (double secs) {
  Time time;
  time.hour = int (secs / 3600.0);
  secs -= time.hour * 3600.0;
  time.minute = int (secs / 60.0);
  secs -= time.minute * 60.0;
  time.second = secs;
  return time;
}

Here they are using 'sec's as a running counter.

jim mcnamara · Dec 6th, 2005, 9:35 AM

Don't know what your app is gong to do. However, time and date is a lot messier than you would ever believe. DO NOT use the above if you require strict accuracy - leap seconds will get you in trouble, for example....

What you show above will work fine on a seconds elapsed since midnight kind of timer, where you don't care if there are variations on the number of seconds in the day.

jim mcnamara · Dec 6th, 2005, 9:42 AM

Here is some quick information on Calendrics:

http://aa.usno.navy.mil/data/docs/JulianDate.html

If you're on Unix, and your locale is default or "C" try

(Toggle Plain Text)

cal 1752

and look at September for a quick surprise

Dec 6th, 2005, 7:38 AM	#1
kompressor Newbie Join Date: Dec 2005 Posts: 2 Rep Power: 0	How to handle time.... I have a strange question. I have a parameter that is time, represented in seconds. I also have a structure that has seconds, minutes, hours, days,etc. How would I go about filling the members of the structure? in your language of choice. Its the algorithim im looking for. ~k

Dec 6th, 2005, 8:09 AM	#2
stevengs Professional Programmer Join Date: May 2005 Location: Bad Nauheim, Germany Posts: 436 Rep Power: 4	Ask yourself how many seconds are in a minute, how many minutes in an hour, how many hours in a day, etc. This will get you going in the right direction. __________________ -Steven "Is this a piece of your brain?" - Basil Fawlty

Dec 6th, 2005, 8:49 AM	#3
kompressor Newbie Join Date: Dec 2005 Posts: 2 Rep Power: 0	I used this site as a template. http://www.ibiblio.org/obp/thinkCS/c...ish/chap11.htm (Toggle Plain Text) Time makeTime (double secs) { Time time; time.hour = int (secs / 3600.0); secs -= time.hour * 3600.0; time.minute = int (secs / 60.0); secs -= time.minute * 60.0; time.second = secs; return time; } Time makeTime (double secs) { Time time; time.hour = int (secs / 3600.0); secs -= time.hour * 3600.0; time.minute = int (secs / 60.0); secs -= time.minute * 60.0; time.second = secs; return time; } Here they are using 'sec's as a running counter.

Dec 6th, 2005, 9:42 AM	#5
jim mcnamara Hobbyist Programmer Join Date: Jun 2005 Location: New Mexico Posts: 228 Rep Power: 4	Here is some quick information on Calendrics: http://aa.usno.navy.mil/data/docs/JulianDate.html If you're on Unix, and your locale is default or "C" try (Toggle Plain Text) cal 1752 cal 1752 and look at September for a quick surprise

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Dec 6th, 2005, 9:35 AM	#4
jim mcnamara Hobbyist Programmer Join Date: Jun 2005 Location: New Mexico Posts: 228 Rep Power: 4	Don't know what your app is gong to do. However, time and date is a lot messier than you would ever believe. DO NOT use the above if you require strict accuracy - leap seconds will get you in trouble, for example.... What you show above will work fine on a seconds elapsed since midnight kind of timer, where you don't care if there are variations on the number of seconds in the day.

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Programming Forums > Application Development > Other Programming Languages

How to handle time....