Re: [Dev-C++] dynamic allocation and structs

[Per W. <pw...@ia...>]

Well, maybe not directly forever.

It will also be automatically released - for most operating systems, that
is - when the application ends.

/Per W

On Thu, 24 Oct 2002, Daniel Glenfield wrote:

> I can help with the first - the lifetime of a variable created with mallo=
c()=20
> is forever - until you call free() of course!
>=20
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> >From: "Scott Williams" <se...@al...>
> >Reply-To: <se...@al...>
> >To: <dev...@li...>
> >Subject: [Dev-C++] dynamic allocation and structs
> >Date: Thu, 24 Oct 2002 08:18:24 -0400
> >
> >Hi,
> >
> >I'm working in C (no C++ please).  Got a couple of questions related to
> >dynamic allocation and in particular, dynamically allocating an array of
> >structs.
> >
> >First, what is the duration of memory allocated by malloc (etc.)?  In
> >particular, I want to dynamically allocate/de-allocate several global
> >variables within a single subroutine called from main and so want to be=
=20
> >sure
> >that the allocated memory exists beyond the scope of that subroutine.
> >
> >Second, it is my understanding that it is perfectly acceptable to have a=
n
> >array of structs.  E.g.,
> >
> >struct mystruct {
> >   double var1;
> >   long   var2;
> >   etc...
> >}
> >
> >. . .
> >
> >struct mystruct data[100];
> >
> >Is this correct?  If so, what then is the calling sequence to dynamicall=
y
> >allocate an array of structs, and, in particularly, make the result
> >available globally?
> >
> >Thanks for your help (& sorry if this is naive).
> >
> >Scott Williams
> >
> >
> >
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