From: Hans-Bernhard Broeker <broeker AT physik DOT rwth-aachen DOT de>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: allocated memory size
Date: 22 May 2000 12:57:37 GMT
Organization: Aachen University of Technology (RWTH)
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Kalum Somaratna aka Grendel <kalum AT lintux DOT cx> wrote:
[...]
> Actually Why would you need to know how much of bytes has been allocated
> to a pointer...

In a nutshell: dynmically sized arrays. 

What a C++ programmer would implement using the 'vector<>' template
can be implemented in C by a data structure containing a pointer to
allocated memory, plus two variables: one to hold the current size of
that array, and another that tells up to which place the array is
currently filled.
-- 
Hans-Bernhard Broeker (broeker AT physik DOT rwth-aachen DOT de)
Even if all the snow were burnt, ashes would remain.