Message-ID: <390BEB63.675521A7@gtcom.net>
From: Krogg <krogg DOT no DOT to DOT spam AT gtcom DOT net>
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Newsgroups: comp.os.msdos.djgpp
Subject: Re: Array swapping.
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Date: Sun, 30 Apr 2000 04:14:27 -0400
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

Nate Eldredge wrote:
> 
> Krogg <krogg DOT no DOT to DOT spam AT gtcom DOT net> writes:
> 
> > Joseph Rose wrote:
> > >
> > > Try:
> > >
> > > void Swap (void* A, void* B)
> > > {
> > >     void* i=A
> > >     A=B
> > >     B=i
> > >     return;
> > > }
> >
> > Just for fun i tried this.
> [snip]
> > This is the output:
> > 59.720001
> > 0.000000
> >
> > so,IT DON'T WERK........
> >
> >
> > The real problem in this is that i need to
> > change the value of a constant pointer...
> >
> > There has to be a way to do this.
> 
> The solution is to make it not constant.  Instead of `float
> foo[40][50]', you could do:
> 
> float (*foo)[50];
> foo = malloc(40 * sizeof(*foo));
> 
> You can then throw the pointers around as desired.

Cool,I partly grasp the idea,but how do i use the
array?


 
> This should probably go to comp.lang.c, since there's nothing
> DJGPP-specific about it, but oh well.
> 

I thought that the solution might be nonportable and possible
Djgpp specfic,so i posted here.

Thanks by the way for the reply,I am trying to understand it,
but so far i am stuck a little....



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