void function(int &a) { }

**Greg P.** · Nov 13 '05, 04:42 PM

Re: void function(int &a) { }

"<- Chameleon ->" <cham_gss@hotma il.NOSPAM.com> wrote in message
news:bgasrt$c7l $1@nic.grnet.gr ...[color=blue]
> I saw this code in C++ but when tried to C causes an error:
> -------------
> void function(int &a) { a = 5; }
> -------------[/color]

You are trying to pass by reference, which is C++ specific. You can try two
things, if you don't want to make a copy of 'a' (which an int is hardly
anything to worry about):

void function(int *a) { *a = 5; }

or just remove the ampersand altogether

I won't get into references here as this newsgroup is for the C standard,
not C++

**Chris Dollin** · Nov 13 '05, 04:42 PM

Re: void function(int &a) { }

- Chameleon - wrote:
[color=blue]
> I saw this code in C++ but when tried to C causes an error:
> -------------
> void function(int &a) { a = 5; }
> -------------
> with this, passed in "function" the "a" pointer instead of "a" value, BUT
> inside "function" I have access to "a" value not with "*a" but with "a".
>
> Why this is not working in C?[/color]

Because C++ isn't the same language as C, so there's no obvious
reason why a C++ feature would work in C.

If you want to use C, learn C.

--
Chris "electric hedgehog" Dollin
C FAQs at: http://www.faqs.org/faqs/by-newsgrou...mp.lang.c.html
C welcome: http://www.angelfire.com/ms3/bchambl...me_to_clc.html

**Dan Pop** · Nov 13 '05, 04:42 PM

Re: void function(int &a) { }

In <bgasrt$c7l$1@n ic.grnet.gr> "<- Chameleon ->" <cham_gss@hotma il.NOSPAM.com> writes:
[color=blue]
>I saw this code in C++ but when tried to C causes an error:
>-------------
>void function(int &a) { a = 5; }
>-------------
>with this, passed in "function" the "a" pointer instead of "a" value, BUT
>inside "function" I have access to "a" value not with "*a" but with "a".
>
>Why this is not working in C?[/color]

Why isn't Fortran syntax working in C?
Why isn't Pascal syntax working in C?
Why isn't Perl syntax working in C?
And so on, and so on, and so on...

Next time, try engaging your brain before posting a question. It doesn't
(or, at least, shouldn't) hurt.

Dan
--
Dan Pop
DESY Zeuthen, RZ group
Email: Dan.Pop@ifh.de

**Martin Ambuhl** · Nov 13 '05, 04:42 PM

Re: void function(int &a) { }

Greg P. wrote:

[color=blue]
> I won't get into references here as this newsgroup is for the C standard,
> not C++[/color]

No, this newsgroup is for standard C. The newsgroup for the C standard
is news:comp.std.c

--
Martin Ambuhl

**Greg P.** · Nov 13 '05, 04:42 PM

Re: void function(int &a) { }

"Martin Ambuhl" <mambuhl@earthl ink.net> wrote in message
news:2b8Wa.71$k P6.52@newsread2 .news.atl.earth link.net...
| No, this newsgroup is for standard C. The newsgroup for the C standard
| is news:comp.std.c
That's what i meant, give a guy some slack =)

**Greg P.** · Nov 13 '05, 04:42 PM

Re: void function(int &a) { }

"Martin Ambuhl" <mambuhl@earthl ink.net> wrote in message
news:q38Wa.59$k P6.47@newsread2 .news.atl.earth link.net...
| Because it's nonsense. '(int &a)' is a syntax error. If you want to do
| this in C, write in C instead of using the pointless syntactic sugar
| introduced in C++ for people too stupid to write C:
I half agree with that statement as I find templates a break from thousands
of lines of code (which are only C++). But I also find that references are a
lazy way of lacking pointer knowledge.

**Guest** · Nov 13 '05, 04:42 PM

Re: void function(int &a) { }

> The sytnax is not C language syntax. You yourself pointed out that it's
from[color=blue]
> a different language. Here are some other things that won't work:
>
> $a =~ s/\d+/$1+1/eg;
> 0 -72 -72 0 0 72 72 0 4 72 72 moveto { rlineto } repeat stroke
> if (a instanceof java.lang.Strin g) System.out.prin tln((String) a);
>
> ... and so on ...[/color]

ha ha! Ok! I thought that maybe it is standard C but I was wrong!
Thanks!
[color=blue][color=green]
> > I saw this code in C++ but when tried to C causes an error:
> > -------------
> > void function(int &a) { a = 5; }
> > -------------
> > with this, passed in "function" the "a" pointer instead of "a" value,[/color][/color]
BUT[color=blue][color=green]
> > inside "function" I have access to "a" value not with "*a" but with "a".
> >
> > Why this is not working in C?[/color][/color]

**Guest** · Nov 13 '05, 04:42 PM

Re: void function(int &a) { }

> >I saw this code in C++ but when tried to C causes an error:[color=blue][color=green]
> >-------------
> >void function(int &a) { a = 5; }
> >-------------
> >with this, passed in "function" the "a" pointer instead of "a" value, BUT
> >inside "function" I have access to "a" value not with "*a" but with "a".
> >
> >Why this is not working in C?[/color]
>
> Why isn't Fortran syntax working in C?
> Why isn't Pascal syntax working in C?
> Why isn't Perl syntax working in C?
> And so on, and so on, and so on...[/color]

Its clearly now ;-)
[color=blue]
> Next time, try engaging your brain before posting a question. It doesn't
> (or, at least, shouldn't) hurt.[/color]

be cool

**Slartibartfast** · Nov 13 '05, 04:42 PM

Re: void function(int &a) { }

"Greg P." <no@spam.sam> wrote in message news:1w8Wa.712$ jg7.180@newsrea d3.news.pas.ear thlink.net...[color=blue]
> "Martin Ambuhl" <mambuhl@earthl ink.net> wrote in message
> news:q38Wa.59$k P6.47@newsread2 .news.atl.earth link.net...
> | Because it's nonsense. '(int &a)' is a syntax error. If you want to do
> | this in C, write in C instead of using the pointless syntactic sugar
> | introduced in C++ for people too stupid to write C:
> I half agree with that statement as I find templates a break from thousands
> of lines of code (which are only C++). But I also find that references are a
> lazy way of lacking pointer knowledge.
>
>[/color]

Yes, of course C++ reference syntax is nonsense in a C program, but to describe it as "pointless syntactic sugar" or "a lazy way of
lacking pointer knowledge [sic]" demonstrates your ignorance of C++.

--
#include <stdio.h>
char*f="#includ e <stdio.h>char*f =%c%s%c;main(){ printf(f,34,f,3 4,10);}%c";
main(){printf(f ,34,f,34,10);}

**goose** · Nov 13 '05, 04:42 PM

Re: void function(int &a) { }

"<- Chameleon ->" <cham_gss@hotma il.NOSPAM.com> wrote in message news:<bgasrt$c7 l$1@nic.grnet.g r>...[color=blue]
> I saw this code in C++ but when tried to C causes an error:
> -------------
> void function(int &a) { a = 5; }
> -------------
> with this, passed in "function" the "a" pointer instead of "a" value, BUT
> inside "function" I have access to "a" value not with "*a" but with "a".
>
> Why this is not working in C?[/color]

because C is not C++.

C does not support pass-by-reference function calls. presumably,
C++ does.

the above in C would be
void function (int *a) { *a = 5; }

hth
goose,

**Martin Ambuhl** · Nov 13 '05, 04:42 PM

Re: void function(int &a) { }

Greg P. wrote:
[color=blue]
> "Martin Ambuhl" <mambuhl@earthl ink.net> wrote in message
> news:q38Wa.59$k P6.47@newsread2 .news.atl.earth link.net...
> | Because it's nonsense. '(int &a)' is a syntax error. If you want to do
> | this in C, write in C instead of using the pointless syntactic sugar
> | introduced in C++ for people too stupid to write C:[/color]
[color=blue]
> I half agree with that statement as I find templates a break from thousands
> of lines of code (which are only C++). But I also find that references are a
> lazy way of lacking pointer knowledge.[/color]

While templates can be useful, there were no templates in the posted
code to which I responded. The only C++ syntactic sugar in evidence was
the so-called "pass-by-reference."

--
Martin Ambuhl

**Cousin Ricky** · Nov 13 '05, 04:42 PM

Re: void function(int &a) { }

"<- Chameleon ->" <cham_gss@hotma il.NOSPAM.com> wrote in message news:<bgasrt$c7 l$1@nic.grnet.g r>...[color=blue]
> I saw this code in C++ but when tried to C causes an error:
> -------------
> void function(int &a) { a = 5; }
> -------------
> with this, passed in "function" the "a" pointer instead of "a" value, BUT
> inside "function" I have access to "a" value not with "*a" but with "a".
>
> Why this is not working in C?[/color]

Perhaps because C is not C++. Just a guess.

--
------------------- Richard Callwood III --------------------
~ U.S. Virgin Islands ~ USDA zone 11 ~ 18.3N, 64.9W ~
~ eastern Massachusetts ~ USDA zone 6 (1992-95) ~
--------------- http://cac.uvi.edu/staff/rc3/ ---------------

bd · Nov 13 '05, 04:42 PM

Re: void function(int &a) { }

On Thu, 31 Jul 2003 14:02:32 +0300, <- Chameleon -> wrote:
[color=blue]
> I saw this code in C++ but when tried to C causes an error:
> -------------
> void function(int &a) { a = 5; }
> -------------
> with this, passed in "function" the "a" pointer instead of "a" value, BUT
> inside "function" I have access to "a" value not with "*a" but with "a".
>
> Why this is not working in C?[/color]

Because C isn't C++.

--
Freenet distribution not available
Chicken Little was right.

**Default User** · Nov 13 '05, 04:43 PM

Re: void function(int &a) { }

Martijn wrote:[color=blue]
>
> <- Chameleon -> wrote:[color=green]
> > Why this is not working in C?[/color]
>
> Why all these offensive responses? It is a legitimate question which only
> Greg seems to take this seriously. All those "witty" responses are more
> cluttering than the original post.[/color]

How do you figure that it is a legitimate question? Even the most
cursory of research would have revealed that C doesn't support
references.
[color=blue]
> I guess it is true what they say: "There are no stupid questions, only
> stupid answers" :)[/color]

Besides stupid questions and stupid answers there are stupid statements.

Brian Rodenborn

void function(int &a) { }

void function(int &a) { }

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