Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!helios!jadam
From: jadam@cs.tamu.edu (James P Adam)
Newsgroups: comp.lang.c++
Subject: Re: Why no renew
Message-ID: <13502@helios.TAMU.EDU>
Date: 20 Mar 91 06:30:50 GMT
References: <1991Mar16.172814.6525@mathcs.sjsu.edu> <966@elan.Elan.COM>
Sender: usenet@helios.TAMU.EDU
Organization: Computer Science Department, Texas A&M University
Lines: 44

Newsgroups: comp.lang.c++
Subject:  Friend Functions versus Friend Classes
Summary: protected vs private
Expires: 
References: <1991Mar16.172814.6525@mathcs.sjsu.edu> <966@elan.Elan.COM>
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Organization: Computer Science Department, Texas A&M University
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>I have a question about friend functions.  
> [stuff deleted]
>class ToDoList {
>  friend Boolean Manager::Reprioritize(Bug& item, int priority);
>  private:
>     ThingList *things;
>};
>
>class InternalPerson {
>private:
>    ToDoList ToDo;
>};
>
>class Manager : public InternalPerson {
>public:
>  Boolean Reprioritize(Bug& item, int priority); // needs to look at ToDoList
>};

   It's hard to tell from this outline what exactly is going on
inside the Reprioritize function (which is where the problem is,
I assume).  If you're trying to do something with the ToDoList "ToDo"
that is declared in class InternalPerson, recognize that you can't
access the information in a InternalPerson::ToDo directly from class
Manager, since ToDo is declared "private" inside InternalPerson.  If
you want access to an InternalPerson::ToDo variable from class
Manager, try making ToDo "protected" inside Internal person, instead
of private.
   If this answer is off track, My Humble Appologies (MHA).  If
you wind up not getting the answer you want in the next day or so,
you might consider posting a larger snippet of your code, esp. the code 
inside the function that is giving you the problems, plus the actual
error/warning messages from the compiler.
     Jim