please tell me about the definition of "Date Structrue"

[mloonjin]

I have read some book for the concept.but it is different between different books .I want to know the good answer base on the person who hold rich experience.
thank you

[manish_velankani]

Well I do not have a very rich experience, still if it helps have a look.
There are various formats available. It depends whether you are picking it up from system library or compiler library. System implementation may differ so you should stick to compiler format.
C++ provides a header file <ctime> which you can use.
For detail explanation of formatting look at : http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclib/html/_crt_strftime.2c_.wcsftime.asp

And if you want to use system part still and you are on unix or related platform just have a look at man pages.

[mitakeet]

The problem with the date is that no one can agree on what a set of valid date formats are. That is one primary reason why C++ lacks any built-in date type beyond what is supplied by C. Not impressed? Try writing your own!

[stober]

All the functions in time.h are ANSI standard and supported by every ANSI standard-compliant compiler. There are, of course, a lot of other date formats which are operating system dependent.