Newsgroups: comp.lang.c
Path: utzoo!utgpu!news-server.csri.toronto.edu!torsqnt!geac!tse!markt
From: markt@tse.uucp (Mark Turner)
Subject: SUMMARY: Date to DOW Conversion
Message-ID: <1991Jun20.171806.5722@tse.uucp>
Reply-To: markt@tse.UUCP (Mark Turner)
Organization: Toronto Stock Exchange
Distribution: na
Date: Thu, 20 Jun 91 17:18:06 GMT


Yesterday, I posted the following query ....

>Hi folks! Can anyone help me with suggestions on how to convert a date to a day
>of the week? For example, I start with a date like '19910619'; I'd like some
>function to return 'Wed' or '4' or some such indication of the day. This must
>be doable! 

I quickly received a helpful reply from steve@taumet, as follows:

>Well, I'm afraid it is embarassingly obvious.  Check your manual for the
><time.h> functions.  You take your date and plug values into a variable
>of type 'struct tm'.  Once you have that, you use mktime() to convert
>it to a time_t, simultaneously filling in the missing fields in the
>struct.  If any values in the struct are out of range, mktime() will
>adjust them.  You now have a date expressed as both a time_t and a
>struct tm, and you can do anything you like with that.

Thanks to all those who took time to suggest solutions.

Regards,                        
Mark Turner                     

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mark@tse.uucp - Floor & Product Systems - The Toronto Stock Exchange