| Author | Message | Time |
|---|---|---|
| treyreese | I'm trying to make a program where the user inputs the startmonth/startday and the endmonth/endday in the format like 1/1 2/1. What would be the best way to figure out how many days is inbetween the two dates? | February 5, 2004, 8:20 PM |
| Yoni | Try: difftime | February 5, 2004, 8:49 PM |
| treyreese | difftime is used for days or seconds and stuff? | February 5, 2004, 8:53 PM |
| Yoni | Yes, you got it! Enjoy. | February 5, 2004, 9:05 PM |
| Adron | I tend to turn times into time_t's internally since those are easy to use. Subtracting two time_t's to find a difference in days, hours, whatever, is easy. | February 5, 2004, 11:23 PM |
| treyreese | heh im confused with it, i have never really used time.h so i don't understand it | February 6, 2004, 3:29 AM |
| iago | Basically, convert both dates to the number of milliseconds since some arbitrary date, subtract them, and turn them back. Look up time_t on Google for more information. | February 6, 2004, 12:55 PM |
| Kp | [quote author=iago link=board=30;threadid=5096;start=0#msg42769 date=1076072153] Basically, convert both dates to the number of milliseconds since some arbitrary date, subtract them, and turn them back. Look up time_t on Google for more information. [/quote] time_t is in seconds, not milliseconds. | February 6, 2004, 9:34 PM |
| iago | [quote author=Kp link=board=30;threadid=5096;start=0#msg42834 date=1076103291] [quote author=iago link=board=30;threadid=5096;start=0#msg42769 date=1076072153] Basically, convert both dates to the number of milliseconds since some arbitrary date, subtract them, and turn them back. Look up time_t on Google for more information. [/quote] time_t is in seconds, not milliseconds. [/quote] Well, there's some time structure that's in milliseconds! :) I've been using java.util.Time.getCurrentTimeInMillis() to much, I guess! | February 6, 2004, 9:46 PM |
| Skywing | [quote author=iago link=board=30;threadid=5096;start=0#msg42838 date=1076104004] [quote author=Kp link=board=30;threadid=5096;start=0#msg42834 date=1076103291] [quote author=iago link=board=30;threadid=5096;start=0#msg42769 date=1076072153] Basically, convert both dates to the number of milliseconds since some arbitrary date, subtract them, and turn them back. Look up time_t on Google for more information. [/quote] time_t is in seconds, not milliseconds. [/quote] Well, there's some time structure that's in milliseconds! :) I've been using java.util.Time.getCurrentTimeInMillis() to much, I guess! [/quote] There is no C standard structure like that. | February 10, 2004, 5:34 PM |
| Adron | [quote author=Skywing link=board=30;threadid=5096;start=0#msg43519 date=1076434446] There is no C standard structure like that. [/quote] The closest common C structure I can think of is timeval with microseconds. | February 10, 2004, 6:03 PM |
| Skywing | [quote author=Adron link=board=30;threadid=5096;start=0#msg43529 date=1076436189] [quote author=Skywing link=board=30;threadid=5096;start=0#msg43519 date=1076434446] There is no C standard structure like that. [/quote] The closest common C structure I can think of is timeval with microseconds. [/quote] That is POSIX and not C standard, though. | February 10, 2004, 6:04 PM |
| Adron | [quote author=Skywing link=board=30;threadid=5096;start=0#msg43532 date=1076436285] That is POSIX and not C standard, though. [/quote] That's why I said a common C structure. Most of the C compilers support POSIX, in some form, some parts of it. Can you think of any other common time structure with more than second accuracy? | February 10, 2004, 6:16 PM |