how do I find out how many days between 2 days?

[could.net]

I want to get these 2 values in c++ without using mfc:
1. how many days between current date and 0001-1-1
2. how many milliseconds elapsed since 00:00 of today.

I would like to do this by only c++ or c runtime functions.

Thanks in advance.

 

[Victor Bazarov]

I want to get these 2 values in c++ without using mfc:
1. how many days between current date and 0001-1-1
2. how many milliseconds elapsed since 00:00 of today.

I would like to do this by only c++ or c runtime functions.

What's stopping you?

 

[Salt_Peter]

I want to get these 2 values in c++ without using mfc:
1. how many days between current date and 0001-1-1
2. how many milliseconds elapsed since 00:00 of today.

I would like to do this by only c++ or c runtime functions.

Thanks in advance.

mfc is not C++ and it doesn't use C++ in any way either.

Did you mean "how do I find out how many days between 2 _dates_ ?

If so, how do you _store_ a date or time?
After all, isn't that a requirement of the problem domain at hand?

 

[Daniel T.]

I want to get these 2 values in c++ without using mfc:
1. how many days between current date and 0001-1-1
2. how many milliseconds elapsed since 00:00 of today.

I would like to do this by only c++ or c runtime functions.

Thanks in advance.

To do what you want, you need to investigate the functions available in
the header <ctime>

http://www.dinkumware.com/manuals/?manual=compleat&page=ctime.html

 

[osmium]

To do what you want, you need to investigate the functions available in
the header <ctime>

http://www.dinkumware.com/manuals/?manual=compleat&page=ctime.html

Sounds like a wild goose chase, especially WRT part 1. The stuff in ctime
deals only with a very restricted set of dates.

I suggest the OP look up Julian day number. *Not* to be confused with the
Julian calendar.

 

[Bo Yang]

(e-mail address removed) :

I want to get these 2 values in c++ without using mfc:
1. how many days between current date and 0001-1-1
2. how many milliseconds elapsed since 00:00 of today.

I would like to do this by only c++ or c runtime functions.

I think you can take a look at the boost datetime library !