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Ulrich Eckhardt wrote:
> TreatmentPlant wrote:
>> I am having a lot of trouble trying to work with dates.
>>
>> I am looking for a simple script to return true if the date today is
>> after a particular date, say 27 April 2006, false otherwise.
>>
>> I know this is a simple request, but none of my books have anything
>> dealing with dates, and Google isn't doing too much for me either?
>
> If you have the date in a string like "27 April 2006", you can split it up
> in three numbers ("April" will have to become 4).
> You can then say:
> 1. If the year of today is greater than the year, it is after today.
> 2. If the year of today is smaller, then it is before today
> 3. If neither is true, i.e. the years are equal, you need to look at the
> months where the same principle of ordering applies.
>
> Otherwise I would have a look at Boost's DateTime library.
>
> Uli
>
POSTED AT:
alt.comp.lang.learn.c-c++
comp.lang.c++

Surely I don't have to go to Boost and get 10MB of header files just to
solve this problem!! That seems incredible.

It is such a really simple problem... all I want to do is compare two
dates, one is today and the other is a hard coded date. Nothing in any
of my books shows me how to do it. All the sites I have visited are
trying to show me how to make timers, stopwatches etc.

I just want to programmatic way to find if today's date is before or
after a specified date. 27 April 2006 was just an example.

Please help.

TreatmentPlant wrote:
> Ulrich Eckhardt wrote:
>> TreatmentPlant wrote:
>>> I am having a lot of trouble trying to work with dates.
>>>
>>> I am looking for a simple script to return true if the date today is
>>> after a particular date, say 27 April 2006, false otherwise.
>>>
>>> I know this is a simple request, but none of my books have anything
>>> dealing with dates, and Google isn't doing too much for me either?
>>
>> If you have the date in a string like "27 April 2006", you can split
>> it up
>> in three numbers ("April" will have to become 4). You can then say: 1.
>> If the year of today is greater than the year, it is after today.
>> 2. If the year of today is smaller, then it is before today
>> 3. If neither is true, i.e. the years are equal, you need to look at the
>> months where the same principle of ordering applies.
>>
>> Otherwise I would have a look at Boost's DateTime library.
>>
>> Uli
>>
> POSTED AT:
> alt.comp.lang.learn.c-c++
> comp.lang.c++
>
> Surely I don't have to go to Boost and get 10MB of header files just to
> solve this problem!! That seems incredible.
>
> It is such a really simple problem... all I want to do is compare two
> dates, one is today and the other is a hard coded date. Nothing in any
> of my books shows me how to do it. All the sites I have visited are
> trying to show me how to make timers, stopwatches etc.
>
> I just want to programmatic way to find if today's date is before or
> after a specified date. 27 April 2006 was just an example.
>
> Please help.


P.S. This is required for a non-MFC dll file so I cannot use CTime and
COleTimeDate ahich are in afx.h and afxdisp.h

> > TreatmentPlant wrote:
> >> I am having a lot of trouble trying to work with dates.

> It is such a really simple problem... all I want to do is compare two
> dates, one is today and the other is a hard coded date. Nothing in any
> of my books shows me how to do it. All the sites I have visited are
> trying to show me how to make timers, stopwatches etc.

Convert both to time_t format (using midnight on the hardcoded date).
You can compare those as if they are int's.

HTH,
Michiel Salters

TreatmentPlant wrote:
> Ulrich Eckhardt wrote:
>> TreatmentPlant wrote:
>>> I am having a lot of trouble trying to work with dates.
>>>
>>> I am looking for a simple script to return true if the date today is
>>> after a particular date, say 27 April 2006, false otherwise.
>>>
>>> I know this is a simple request, but none of my books have anything
>>> dealing with dates, and Google isn't doing too much for me either?
>>
>> If you have the date in a string like "27 April 2006", you can split
>> it up
>> in three numbers ("April" will have to become 4). You can then say: 1.
>> If the year of today is greater than the year, it is after today.
>> 2. If the year of today is smaller, then it is before today
>> 3. If neither is true, i.e. the years are equal, you need to look at the
>> months where the same principle of ordering applies.
>>
>> Otherwise I would have a look at Boost's DateTime library.
>>
>> Uli
>>
> POSTED AT:
> alt.comp.lang.learn.c-c++
> comp.lang.c++
>
> Surely I don't have to go to Boost and get 10MB of header files just to
> solve this problem!! That seems incredible.
>
> It is such a really simple problem... all I want to do is compare two
> dates, one is today and the other is a hard coded date. Nothing in any
> of my books shows me how to do it. All the sites I have visited are
> trying to show me how to make timers, stopwatches etc.
>
> I just want to programmatic way to find if today's date is before or
> after a specified date. 27 April 2006 was just an example.
>
> Please help.

Thanks to all those that offered assistance.
I have the problem sorted out now.

It seems that when you use struct tm , you need to provide ALL the
values for the time and date, when the documentation I have says you
don't need to!

Thanks again!