«

Hi,

a friend of mine ask about the reason and the history beyond the two
different ways to include std-headers like

#include "stdio.h"
#include <cstdio>


He's no using the usenet, but he read the answers via google.




Rainer

Rainer Heynke wrote:


>
> He's no using the usenet, but he read the answers via google.

Google Groups allows one to post as well as read.




Brian

On Sep 12, 9:27 am, blargg....@gishpuppy.com (blargg) wrote:
> In article <gac1i1$hq...@aioe.org>, Rainer Heynke
> <nore...@plucked.de> wrote:

> > a friend of mine ask about the reason and the history beyond
> > the two different ways to include std-headers like

> > #include "stdio.h"
> > #include <cstdio>

> Before C++ became an ISO standard, there were already many C++
> headers like iostream.h and similar, whose functionality
> differed from one compiler to another.

Actually, the functionality differed less than the names. Some
compilers had <iostream.h>, <strstream.h>, etc.; others
<iostream.hpp>, <strstrea.hpp>, etc.; and who knows what else.

--
James Kanze (GABI Software) email:
Conseils en informatique orientée objet/
Beratung in objektorientierter Datenverarbeitung
9 place Sémard, 78210 St.-Cyr-l'École, France, +33 (0)1 30 23 00 34

On Sep 11, 11:27 pm, Victor Bazarov <v.Abaza...@comAcast.net> wrote:
> Rainer Heynke wrote:
> > a friend of mine ask about the reason and the history beyond
> > the two different ways to include std-headers like

> > #include "stdio.h"
> > #include <cstdio>

> > He's no using the usenet, but he read the answers via
> > google.

> Standard headers are never included with quotes, always with
> angle brackets. So, you shouldn't at all see

> #include "stdio.h"

> but always

> #include <stdio.h>

> . As to the presence of '.h', it's specific to C. Standard
> C++ headers do not have '.h' in them.

Both <stdio.h> and <cstdio> are part of standard C++. Based on
the C++03 standard, very few compilers actuallly implement
<cstdio> correctly, however, so it's probably best to avoid it.

--
James Kanze (GABI Software) email:
Conseils en informatique orientée objet/
Beratung in objektorientierter Datenverarbeitung
9 place Sémard, 78210 St.-Cyr-l'École, France, +33 (0)1 30 23 00 34