From: mert0407 AT sable DOT ox DOT ac DOT uk (George Foot)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Pointers
Date: 12 Oct 1996 19:13:40 GMT
Organization: Oxford University, England
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References: <53oa2v$kr4 AT miracle DOT cybernex DOT net>
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To: djgpp AT delorie DOT com
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mrichman AT cybernex DOT net wrote:
: Is it safe to assume that all pointer variables take up the same
: number of bytes, or is that compiler dependent.

If you're writing really portable code, it's not safe to assume anything. 
If you make a #define at the start of your source, e.g.

#define POINTER_SIZE sizeof(*void)

then use this, e.g.

int *my_array[20];

for (int a=0;a<20;a++)
 printf("%d\n",*(my_array+a*POINTER_SIZE));

then when you compile on a different platform the multiplier will be 
correctly adjusted.

Of course, it's much simpler to write "my_array[a]", but I presume you 
don't want to do this for some reason.

George Foot