From: Joseph Rose <jorose AT mail DOT gis DOT net>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Array swapping.
Date: Sun, 30 Apr 2000 00:56:24 -0400
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Try:

void Swap (void* A, void* B)
{
    void* i=A
    A=B
    B=i
    return;
}

I am still new to C++: & accesses the variable to which a pointer
points, right?  I haven't tested this: I don't know that void* can point
to anything, or even if this works.

BTW, I looked through the Visual C++ etexts, and found a swap function
which seems to swap anything.  I don't remember what you have to do to
use it, though, or even if DJGPP has it.


Krogg wrote:

> Chris Mears wrote:
> >
> > On Sat, 29 Apr 2000 19:52:27 -0400, that hoopy frood Krogg
> > <krogg DOT no DOT to DOT spam AT gtcom DOT net> wrote:
> >
> > >
> > >I got 2 arrays of same type/size.
> > >
> > >float abc[50][50];
> > >float cba[50][50];
> > >
> > >how can i "swap" them?
> > >
> > >so that abc[x][y] will now point to cba[x][y] and
> > >vice versa...
> > >
> > >I dont care if it is portable,just so long as
> > >it works and can be done over and over.....
> >
> > Uncompiled, untested.
> >
> > void swap(float a[50][50], float b[50][50])
> > {
> >     int i;
> >     int j;
> >
> >     for (i = 0 ; i < 50 ; i++)
> >     {
> >         for (j = 0 ; j < 50 ; j++)
> >         {
> >             float temp = a[i][j];
> >             a[i][j] = b[i][j];
> >             b[i][j] = a[i][j];
> >         }
> >     }
> > }
> >
>
> Thats not what i am looking for...
> I want to swap witch array the array name points to in place.
>
> --
>
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