Bult-in array of objects

From: X. (steamroller1922_at_yahoo.com)
Date: 12/31/04 

Date: 31 Dec 2004 07:10:04 -0800

Hi,

There's been a discussion here on a similar topic that I'd like to
push a step further.
Suppose I get a class S having constructors:
  S(int n) - allocates n bytes of memory
  S() - allocates nothing
  and a copy constructor,copy assigment op. and so on.

I intend to declare a table of structures that contain (among other
things)objects of S with some memory allocated. When I simple-minded
code something like this:
   struct {
      S field1(20); //error here
      ...
   } x[100];

then my compiler insists to use default constructor which doesn't
allocate anything. And all my attempts to apply some object oriented
programming like:
   class X {
      S field1;
      ...
      X(int n): field1(n) {}
   };

   X x[100];
   for(i...)
   { X xxx(20); //to get space for xxx
      x[i] = xxx; //hope the memory chunk will be assigned to x[i]
   }
fall short because the operator= doesn't allocate memory, and flags an
error. In other words, it can't copy an object to an "empty" one).

Well, I could use vector<> or another container (or even overload
operators of S yet I'd prefer not doing so) but this thought's
torturing me in this New Year Eve: how to use a built-in tables to
keep objects? Books (ex.Lippmann's one) claim that's possible but give
no hints.

Happy New Year to those who will reply to my post and those who won't.
X.

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