I'm finally getting around to teaching myself C++ using DM.
The book I'm using is Accelerated C++.
I only started today, but the already the simple examples (said to be ANSI)
are not compiling.

For example:

    // a small C++ program
    #include <iostream>

    int main()
    {
         std::cout << "Hello, world!" << std::endl;
         return 0;
    }

This fails because it requires the #include to include the .h extension. Changing this and recompiling gives the following messages:

tip.cpp:
        std::cout << "Hello, world!" << std::endl;
                ^
tip.cpp(6) : Error: 'cout' is not a member of namespace 'std'
        std::cout << "Hello, world!" << std::endl;
                                                 ^
tip.cpp(6) : Warning 6: value of expression is not used
tip.cpp(10) : Error: need at least one external def
--- errorlevel 1


OK, I know it works when std:: is removed, but why ??

Jim

"jim p" <x@y.com> wrote...
>
> OK, I know it works when std:: is removed, but why ??
>
I think it's the same reason you cannot use the following:
    using namespace std;

It is not yet implemented;
DM it is not yet fully ANSI compliant.

Regards,
Andrew

So the -A switch for strict ANSI is of little use ?




"Andrew Edwards" <edwardsac@spamfreeusa.com> wrote in message news:bdu928$2ai6$1@digitaldaemon.com...
> "jim p" <x@y.com> wrote...
> >
> > OK, I know it works when std:: is removed, but why ??
> >
> I think it's the same reason you cannot use the following:
>     using namespace std;
>
> It is not yet implemented;
> DM it is not yet fully ANSI compliant.
>
> Regards,
> Andrew
>
>

"jim p" <x@y.com> wrote ...
> So the -A switch for strict ANSI is of little use ?
>
I wouldn't say that. Considering that the follwing code works just fine, I would say it's just not fully implemented as yet.

// a small C++ program
#include <iostream.h> // not the added extension .h
using namespace std;   // as stated by the ANSI standard

int main()
{
     cout << "Hello, world!" << endl;
     return 0;
}

This is because the way the SGI iostream library is set up, it is not fully implemented yet and is still experimental. There are indeed two versions of the iostreams library, one which is iostream.h, which simply defines everything in the global namespace and iostream, which defines everything in the std namespace. The SGI iostreams implementation does not yet include the iostream header, which is why you get an error for your program. What you'd want to do is use STLport instead, you can get it off the DM CD or download the latest version from the DM site. Follow the installation instructions and make sure you place the stlport path before the SGI stl path in the SC.INI file. Try your initial program again and you should find that it compiles and works beautifully.

Regards,
Remko van der Vossen


"jim p" <x@y.com> wrote in message news:bdu7ib$294j$1@digitaldaemon.com...
> I'm finally getting around to teaching myself C++ using DM.
> The book I'm using is Accelerated C++.
> I only started today, but the already the simple examples (said to be
ANSI)
> are not compiling.
>
> For example:
>
>     // a small C++ program
>     #include <iostream>
>
>     int main()
>     {
>          std::cout << "Hello, world!" << std::endl;
>          return 0;
>     }
>
> This fails because it requires the #include to include the .h extension. Changing this and recompiling gives the following messages:
>
> tip.cpp:
>         std::cout << "Hello, world!" << std::endl;
>                 ^
> tip.cpp(6) : Error: 'cout' is not a member of namespace 'std'
>         std::cout << "Hello, world!" << std::endl;
>                                                  ^
> tip.cpp(6) : Warning 6: value of expression is not used
> tip.cpp(10) : Error: need at least one external def
> --- errorlevel 1
>
>
> OK, I know it works when std:: is removed, but why ??
>
> Jim
>
>

I've updated my CD releases until the latest one.
I've downloaded and installed the STLport files.
When I try to make the library I get the following

> make -fdm.mak clean all
Error on line 63: bad syntax for implicit rule, should be .frm.to:

Any ideas why this is happening ??

James




"Wichetael" <wichetael@gmx.net> wrote in message news:bdug0k$2h2u$1@digitaldaemon.com...
> This is because the way the SGI iostream library is set up, it is not
fully
> implemented yet and is still experimental. There are indeed two versions
of
> the iostreams library, one which is iostream.h, which simply defines everything in the global namespace and iostream, which defines everything
in
> the std namespace. The SGI iostreams implementation does not yet include
the
> iostream header, which is why you get an error for your program. What
you'd
> want to do is use STLport instead, you can get it off the DM CD or
download
> the latest version from the DM site. Follow the installation instructions and make sure you place the stlport path before the SGI stl path in the SC.INI file. Try your initial program again and you should find that it compiles and works beautifully.
>
> Regards,
> Remko van der Vossen
>
>
> "jim p" <x@y.com> wrote in message news:bdu7ib$294j$1@digitaldaemon.com...
> > I'm finally getting around to teaching myself C++ using DM.
> > The book I'm using is Accelerated C++.
> > I only started today, but the already the simple examples (said to be
> ANSI)
> > are not compiling.
> >
> > For example:
> >
> >     // a small C++ program
> >     #include <iostream>
> >
> >     int main()
> >     {
> >          std::cout << "Hello, world!" << std::endl;
> >          return 0;
> >     }
> >
> > This fails because it requires the #include to include the .h extension. Changing this and recompiling gives the following messages:
> >
> > tip.cpp:
> >         std::cout << "Hello, world!" << std::endl;
> >                 ^
> > tip.cpp(6) : Error: 'cout' is not a member of namespace 'std'
> >         std::cout << "Hello, world!" << std::endl;
> >                                                  ^
> > tip.cpp(6) : Warning 6: value of expression is not used
> > tip.cpp(10) : Error: need at least one external def
> > --- errorlevel 1
> >
> >
> > OK, I know it works when std:: is removed, but why ??
> >
> > Jim
> >
> >
>
>

"jim p" <x@y.com> wrote in message news:bdu7ib$294j$1@digitaldaemon.com...
> This fails because it requires the #include to include the .h extension.

<iostream> is in \dm\stlport\stlport. Try using the -I\dm\stlport\stlport switch.

"jim p" <x@y.com> wrote in message news:bdv45r$5kk$1@digitaldaemon.com...
> I've updated my CD releases until the latest one.
> I've downloaded and installed the STLport files.
> When I try to make the library I get the following
>
> > make -fdm.mak clean all
> Error on line 63: bad syntax for implicit rule, should be .frm.to:
>
> Any ideas why this is happening ??

To build the STLport libraries and dll's:

        cd \dm\stlport\src
        smake -f dm.mak

which will build them into \dm\stlport\lib. To install them:

        xcopy \dm\stlport\lib\*.lib \dm\lib
        xcopy \dm\stlport\lib\*.dll \dm\bin

Please check out \dm\stlport\readme.txt for more details.

Cheers Walter.
I found the readme.txt at the same time I got your reply.



"Walter" <walter@digitalmars.com> wrote in message news:bdv7pa$9es$2@digitaldaemon.com...
>
> "jim p" <x@y.com> wrote in message news:bdv45r$5kk$1@digitaldaemon.com...
> > I've updated my CD releases until the latest one.
> > I've downloaded and installed the STLport files.
> > When I try to make the library I get the following
> >
> > > make -fdm.mak clean all
> > Error on line 63: bad syntax for implicit rule, should be .frm.to:
> >
> > Any ideas why this is happening ??
>
> To build the STLport libraries and dll's:
>
>         cd \dm\stlport\src
>         smake -f dm.mak
>
> which will build them into \dm\stlport\lib. To install them:
>
>         xcopy \dm\stlport\lib\*.lib \dm\lib
>         xcopy \dm\stlport\lib\*.dll \dm\bin
>
> Please check out \dm\stlport\readme.txt for more details.
>
>