🚀 go-pugleaf

"Warren S. Wyght" wrote:
> 
> How do I find the size of an Array once the array was created by either
> malloc or new.
> 
You can't.  You must remember what it was when you created it.
Alteratively, bag using new to allocate arrays and use vector.

 Warren S. Wyght <wswyght@telusplanet.net> wrote:
>How do I find the size of an Array once the array was created by either
>malloc or new.

You can't.  You have to keep track of it yourself.  Or, instead of using
an array, use std::vector or std::string, both of which keep track of
their sizes, and can tell it to you via the size() member function.

-- 
Jon Bell <jtbell@presby.edu>                         Presbyterian College
Dept. of Physics and Computer Science         Clinton, South Carolina USA
[   Help try to keep the Deja.com archive alive!  Sign the petition at  ]
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I see I am going to have to read up on vectors.

Thanks for your help



--
Society is produced by our wants, and government by our wickedness;
the former promotes our POSITIVELY by uniting our affections,
the latter NEGATIVELY by restraining our vices. The one encourages
intercourse,
the other creates distinctions. The first a patron, the last a punisher.
COMMON SENSE
Thomas Paine
Philadelphia, February 14, 1776
Jon Bell <jtbell@presby.edu> wrote in message news:G6wx0D.Cvs@presby.edu...
> Warren S. Wyght <wswyght@telusplanet.net> wrote:
> >How do I find the size of an Array once the array was created by either
> >malloc or new.
>
> You can't.  You have to keep track of it yourself.  Or, instead of using
> an array, use std::vector or std::string, both of which keep track of
> their sizes, and can tell it to you via the size() member function.
>
> --
> Jon Bell <jtbell@presby.edu>                         Presbyterian College
> Dept. of Physics and Computer Science         Clinton, South Carolina USA
> [   Help try to keep the Deja.com archive alive!  Sign the petition at  ]
> [         http://www2.PetitionOnline.com/dejanews/petition.html         ]

I see I am going to have to read up on vectors.

Thanks for your help

--
Society is produced by our wants, and government by our wickedness;
the former promotes our POSITIVELY by uniting our affections,
the latter NEGATIVELY by restraining our vices. The one encourages
intercourse,
the other creates distinctions. The first a patron, the last a punisher.
COMMON SENSE
Thomas Paine
Philadelphia, February 14, 1776
Ron Natalie <ron@spamcop.net> wrote in message
news:3A5B74F9.D9D3225@spamcop.net...
>
>
> "Warren S. Wyght" wrote:
> >
> > How do I find the size of an Array once the array was created by either
> > malloc or new.
> >
> You can't.  You must remember what it was when you created it.
> Alteratively, bag using new to allocate arrays and use vector.

On Tue, 09 Jan 2001 20:25:16 GMT, Warren S. Wyght wrote:
>How do I find the size of an Array once the array was created by either
>malloc or new.

You don't. You need to keep track of the size. That's why data structures
like vector and string have fields that keep track of this information.

Of course, if you use vector<> instead of a pointer array, you can just use
the size() method.

-- 
Donovan Rebbechi * http://pegasus.rutgers.edu/~elflord/ * 
elflord at panix dot com

In article <MsK66.2480$FH5.269435@news0.telusplanet.net>, "Warren S. Wyght" <wswyght@telusplanet.net> wrote:
>How do I find the size of an Array once the array was created by either
>malloc or new.

This is why you should use the vector classes in the standard library.

John - N8086N 
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"Warren S. Wyght" wrote:
> 
> How do I find the size of an Array once the array was created by either
> malloc or new.

You remember it.  Do your own bookkeeping.

also (i'm new) the vector deletes itself automatically which saves loads

Mr Pete



Warren S. Wyght <wswyght@telusplanet.net> wrote in message
news:xLK66.2546$FH5.272485@news0.telusplanet.net...
> I see I am going to have to read up on vectors.
>
> Thanks for your help
>
>
>
> --
> Society is produced by our wants, and government by our wickedness;
> the former promotes our POSITIVELY by uniting our affections,
> the latter NEGATIVELY by restraining our vices. The one encourages
> intercourse,
> the other creates distinctions. The first a patron, the last a punisher.
> COMMON SENSE
> Thomas Paine
> Philadelphia, February 14, 1776
> Jon Bell <jtbell@presby.edu> wrote in message
news:G6wx0D.Cvs@presby.edu...
> > Warren S. Wyght <wswyght@telusplanet.net> wrote:
> > >How do I find the size of an Array once the array was created by either
> > >malloc or new.
> >
> > You can't.  You have to keep track of it yourself.  Or, instead of using
> > an array, use std::vector or std::string, both of which keep track of
> > their sizes, and can tell it to you via the size() member function.
> >
> > --
> > Jon Bell <jtbell@presby.edu>                         Presbyterian
College
> > Dept. of Physics and Computer Science         Clinton, South Carolina
USA
> > [   Help try to keep the Deja.com archive alive!  Sign the petition
t  ]
> >
  http://www2.PetitionOnline.com/dejanews/petition.html         ]
>
>