NetNews Usenet Archive 1993 #1/NN_1993_1.iso/spool/comp/lang/cplus/18685

Internet Message Format | 1993-01-04 | 1.6 KB

Path: sparky!uunet!gatech!destroyer!cs.ubc.ca!unixg.ubc.ca!nistuk
From: [e-mail] (Richard Nistuk)
Newsgroups: comp.lang.c++
Subject: How do I get a smaller array "inside" a bigger array?
Date: 4 Jan 1993 23:33:43 GMT
Organization: University of British Columbia, Vancouver, B.C., Canada
Lines: 45
Message-ID: <[e-mail]>
NNTP-Posting-Host: unixg.ubc.ca
Summary: Help!

Hello,

  I'm having a bit of a problem with pointers.  What I
have done is overloaded the "=" and "+" operators to
return a pointer to a two element array, and I would like
to place this two element array inside a larger array:

...
individual *a,b,c; // create a pointer to an array of
                   // "individual" classes and two
                   // instances of the "individual"
                   // class

a=new individual[4];

b.create();     // initialize b and c
c.create();

a=b+c; // this works o.k.: a[0] and a[1] hold the
       // solutions of b+c.

?=c+b; // now how do I get a[2] and a[3] to hold the
       // solutions of c+b?
...


Is what I want to do possible?

Can I make it work when _a_ has 1000 elements instead
of 4?  For example, assume b,c,and d are instances of
the class "individual", and a is pointer to an array of
1000 "individuals" I would like a[0] and a[1] to be the
solutions of c+d, say, a[2] and a[3] to the solutions
of c+d... and a[1998] and a[1999] to be the solutions
of d+c.

Is what I want to do bad programming style?
Should I do something else?

BTW, I'm attempting this with TC++.

Thanks in advance for your help.
--
Richard Nistuk               4th Yr Physics at U.B.C.
[e-mail]