Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!cs.utexas.edu!uunet!pyrdc!eliot!janm
From: janm@eliot.UUCP (Jan Morales/Development)
Newsgroups: comp.lang.c
Subject: Re: ptrs and arrays
Message-ID: <429@eliot.UUCP>
Date: 9 Nov 89 19:07:58 GMT
References: <2640@dogie.macc.wisc.edu> <304@jhereg.Minnetech.MN.ORG>
Reply-To: janm@eliot.UUCP (Jan Morales/Development)
Organization: Unitech Software, Inc., Reston, VA
Lines: 25

In article <304@jhereg.Minnetech.MN.ORG> Mark H. Colburn writes:
>In article <2640@dogie.macc.wisc.edu> Ross Yahnke writes:
>>Is there a more graceful way to do the following? I allocate
>>a chunk 'o' mem and keep a ptr to it, I want to access the
>>mem as an integer array and inc different elements of the array.

If I read Ross' problem correctly, all you really need is:

foo()
{
	int *aPtr;
	char *calloc();

	aPtr = (int *) calloc(NUM_OF_INTS_IN_ARRAY, sizeof(int));
	aPtr[10]++;
}

That last line of code will increment the eleventh integer in the
"chunk" of memory (aPtr[0] being the first).  Keep in mind that you
should check for a NULL pointer from calloc meaining there's not
enough memory for your request.

Jan
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