Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!wuarchive!udel!rochester!pt.cs.cmu.edu!o.gp.cs.cmu.edu!andrew.cmu.edu!rg2c+
From: rg2c+@andrew.cmu.edu (Robert Nelson Gasch)
Newsgroups: comp.sys.mac.programmer
Subject: Re: malloc() Help
Message-ID: <wbg=xE600WBK82RZZG@andrew.cmu.edu>
Date: 7 Feb 91 02:45:36 GMT
References: <15828@milton.u.washington.edu>
Organization: Class of '91, Carnegie Mellon, Pittsburgh, PA
Lines: 23
In-Reply-To: <15828@milton.u.washington.edu>

>For some reason, I have trouble using malloc() in THINK C.
>Here is an example:
>doit(num)
>int num;
>{
>   char *back;
>
>   back=malloc(num);
>}
>If you know what is wrong with the code PLEASE E-mail me and tell me what
>I need to fix.  Thank you.

Your call to malloc() can't work because the syntax is wrong. You have to
specify the type of pointer you wish to create. Example.

    back = (char *) malloc (num);

If you want to malloc() memory for a structure, you'd use the sizeof() function
Example:

    back = (struct_name *) malloc (sizeof (struct_name));

Hope this helps --> Rob