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From: fzjaffe@castor (Rory Jaffe)
Newsgroups: comp.lang.c,comp.lang.c++
Subject: Re: decalring large arrays
Summary: A "new" approach
Message-ID: <13324@aggie.ucdavis.edu>
Date: 21 Jun 91 00:54:26 GMT
References: <285B94A3.25253@maccs.dcss.mcmaster.ca>
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Reply-To: fzjaffe@castor.ucdavis.edu (Rory Jaffe)
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Organization: Computing Services, UC Davis
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In article <285B94A3.25253@maccs.dcss.mcmaster.ca> tomr@maccs.dcss.mcmaster.ca (Rickey Thomas Tom) writes:
>I have a simple question. I sort some data. The easiest way to do this is to 
>decalre a large array to sotre this data and then sort the array. However,
>it apopears that in a DOS environment, I am only allowed an array up to 64 K in size. Is there a way to declare larger arrays than this for sort. Is there another way that I could store a large quantity of data for sorting.

Since this is the c++ group, here is a C++ suggestion:
I had a problem where I had to allocate a multidimensional large array.
I went crazy figuring out how to cast the pointer until I contacted
Borland:

to allocate a 20 X 40 X 30 array:
float (* arrayname)[40][30] = new float[20][40][30] ;
to delete it
delete arrayname ; // BC++ doesn't care to be told it's an array here
to use it:
	arrayname[a][b][c]

If the array is greater than 64K, just cast the pointer to huge in the
above example.