C++/VB - Newby: More VC6 errors...

Asked By Blue Streak

16-Feb-08 04:49 AM

Hello,

I am trying to typecast an int and a float into a basic_string.
The help files are less than helpful.  How do I accomplish this?

The trouble is I have not touched C/C++ in 10 years.

TIA...

15-Feb-08 12:29 PM

By "typecast", you probably mean you want to format a string
representation of a number.

int n;
ostringstream os;
os << n;
string s = os.str();

See also boost::lexical_cast:

http://www.boost.org/libs/conversion/lexical_cast.htm
--
With best wishes,
Igor Tandetnik

With sufficient thrust, pigs fly just fine. However, this is not
necessarily a good idea. It is hard to be sure where they are going to
land, and it could be dangerous sitting under them as they fly
overhead. -- RFC 1925

15-Feb-08 12:31 PM

Blue:

You need to look at ostringstream (or basic_ostringstream).

--
David Wilkinson
Visual C++ MVP

15-Feb-08 12:34 PM

You didn't show the code that produces the error. Nobody can read
minds here. (Note: In C++ you can't just cast between int/float
and strings.


So, probably the best approach is to get some modern C++ textbook.
ACCU site (http://accu.org) has good reviews of programming books.

HTH
Alex

15-Feb-08 12:35 PM

Why?  What for?


You don't.  What makes you think you need to "typecast"?  What
are you trying to accomplish?


It might be the time you need to take a book and do some studying
of the language, eh?  There is no such thing as "typecast" from
int to basic_string.  If you need/want to obtain the external
representation of a number, you convert it using 'ostringstream'
or 'sprintf' or other suitable mechanism...  But this is just not
the right way to learn.  Get "Accelerated C++" by Koenig and Moo,
and read it.

V
--
Please remove capital 'A's when replying by e-mail
I do not respond to top-posted replies, please don't ask

16-Feb-08 04:49 AM

Thank you!!!!

16-Feb-08 04:49 AM

=2E..and thanks.

15-Feb-08 05:12 PM

@news.datemas.de:


I'd also recommend Scott Meyer's series:

http://www.aristeia.com/books_frames.html