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How to convert UTC timestamp into time string

 
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HHoward



Joined: 29 Aug 2006
Posts: 9
Location: Silicon Valley, CA

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How to convert UTC timestamp into time string
PostPosted: Wed Sep 13, 2006 6:32 pm     Reply with quote
Question How to convert UTC timestamp into time string such as yyyymmhhmmss?
Mattr0



Joined: 27 Mar 2005
Posts: 30

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PostPosted: Wed Sep 13, 2006 7:09 pm     Reply with quote
You need to provide more info for this. Are hours, Min, sec, etc... in seperate varibles?

if so it is easy

Code:


char timestamp[13];

sprintf(timestamp,"%LU%02U%02U%02U%02U",years,month,hour,min,sec);



This will print all of this information into a string. Assumming year is a long and the rest are intergers. Lookup the sprintf function for more information

The %02 will print proceeding zeros up to 2 characters so the output will always be zero padded. otherwords you would get 200602120430 for febuary 2006 at 12:04:30. I notice there is no day in there but that is easy to add, just follow the format.

I hope that helps.



Matt
HHoward



Joined: 29 Aug 2006
Posts: 9
Location: Silicon Valley, CA

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PostPosted: Wed Sep 13, 2006 8:03 pm     Reply with quote
Only information I got is as followings:

UTC time sec in unsigned long
UTC time usec in unsigned long

I need some knowledge to know UTC second started from what time, 1/1/1970? How to use UTC usec to calculate leap second and compensate with data/time conversion?

Thanks.
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