Re: ostringstream x.str() does not return (char*)

From:

"Igor Tandetnik" <itandetnik@mvps.org>

Newsgroups:

microsoft.public.vc.language

Date:

Wed, 5 Dec 2007 14:25:02 -0500

Message-ID:

<eBRaJS3NIHA.5264@TK2MSFTNGP02.phx.gbl>

skidmarks <skidmarks@discussions.microsoft.com> wrote:

I have a code fragment in VS8 (VS.2005):

char* fn() {
ostringstram x;
x << "text";
return x.str();
}

It returns and error message:
C2440: 'return' : cannot convert from
'std::basic_std::basic_sgtring<_Elem,_Traits,_Ax>' to 'char *'

The online help says x.str() return 'char *str( );"

My copy of the documentation says ostringstream::str returns string, not
char*. Can you give the URL to the article you are citing?

You have a more serious design problem. Realize that 'x' goes out of
scope when the function ends, is destroyed and frees all the buffers it
might have allocated. What memory is the char* pointer you are returning
going to point to?
--
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