[Dev-C++] RE: Dynamic Arrays

[Alan T. <ala...@3n...>]

Dee,
            I know that I should use exceptions.  I am learning C++ on a =
part-time basis (by trying some programming] and have not gotten to that =
yet.   I will in time.  Someone else on the list gave me the new syntax =
I was using.  Now I know why I was confused.

            I think my original intent may have been lost in the past =
responses to my unclear inquiry.  The situation I have is that I do not =
know the size of the array of a structure (an integer and several =
strings constitute one entry) I am reading from a file.  Right now I =
read the file just to count the entries and then I declare the array, =
once I know its size.  I wanted to be able to add another element of the =
array as I go.  I also keep the entries in the order in which I read =
them, and I use another array to point to them in sorted order.

            Should I even be using arrays?  If so, is what I described a =
"dynamic array" (expanding the size of the array as needed)?  Does =
size_of_entry mean I have to declare some maximum size?  If so, what am =
I saving by using new --- stack vs. heap space?

                                                                         =
                               Thanks,   Alan (newbie)

Date: Fri, 12 Jan 2001 16:55:57 +0200 (EET)
From: Dee Zsombor <zs...@br...>
Subject: Re: [Dev-C++] dynamic array

> entry_var new int[size_of_entry];=20
> if(!entry_var)
> {
>     cout << "Unable to allocate memory!";
>     getch();
>     exit(-1);
> }
>=20
> delete(entry_var);

There are several problems with your code, firstly the syntax of line
containing the new operator is wrong, correctly it would bee =20
 int *entry_var =3D new int[size_of_entry];=20

=20