Getting the date and write a file with it in it.

[108Stylez]

Hello Ya'll, I've been having a bit of trouble trying to get the system's date. And then saving a file with the date in it. For example today is 31-10-06. It would be cool if I could save the file as CKVproject311006.htm (or CKVproject31102006.htm). So that everyday I make a new file it will save it towards the date.

Thanks for reading and I hope someone can help me =)

[therabidwombat]

I think you need to include the Windows.h header for this (assuming you're using Windows...)

SYSTEMTIME s;	
GetSystemTime(&s);

then you could do something along the lines of

char* fname;
sprintf(fname, "CKVproject%d%d%d.htm", s.wDay, s.wMonth, s.wYear);

I believe that should do what you want...not sure if the syntax is precise though.

[vart]

sprintf(fname, "CKVproject%d%d%d.htm", s.wDay, s.wMonth, s.wYear);

better use format "%02d%02d%04d"

[Salem]

> char* fname;
> sprintf(fname, "CKVproject%d%d%d.htm", s.wDay, s.wMonth, s.wYear);
You also need to make sure the thing you're trying to print into is actually pointing to allocated space.

[Xeridanus]

what about the portable time.h library? in that is a function that does this kind of stuff, strftime() i believe. hang on i go get the prototype.

size_t strftime(char *s, size_t maxsize, const char *format, const struct tm *timeptr);

i know that is the C version, but i don't know the C++ equivilant. i just realised you would have to know the format codes as well.

%d == day of the month, 01-31
%m == month of the year, 01-12
%y == year without century, 00-99
NB: they are case sensative. any unknown characters are put straight into the string as is.
also NB: use localtime(time(NULL)) to get the "struct tm *timeptr"

hope that helped

[108Stylez]

Sorry to say guys, but these codes don't work >.<

It will simply exit without an error when I want to write a file...

[vart]

have you checked that the file name created is actually what you planned to build? before trying to open the file with such a name?
have you tried to create the file with such name from the command prompt?

[Salem]

Of course posting "it doesn't work" without posting any code at all REALLY helps us to figure out what problem you're facing

[vart]

But we can just answer:
"I compiled it and it worked!"
also without posting any code. Easy, hah?