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From: "M. Kools" <mkools@euronet.nl>
Newsgroups: comp.std.c++,comp.lang.c++
Subject: Re: Inheritance Problems
Date: Thu, 10 May 2001 18:06:06 GMT
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"O.Petzold" <opetzold@wit.regiocom.net> schreef in bericht
news:3AFA4600.7656A271@wit.regiocom.net...
> Hello,
>
> the follwoing code isn't working (with the gcc-2.95.2).
> If I see the inharritance it should !
>
> class A {
> public:
>   void ModifyAnother(A* a2) {
>     b = 1;              // is working
>     a2->b = 1;          // woking as well
>   }
> protected:
>   int b;
> };
>
>
> class B : public A {
> public:
>   void ModifyAnother(A* a2)  {
>     b = 1;              // is working
>     a2->b = 1;          // not working
>   }
> };
>
> int main() {
>     B b;
> }
>
> `int A::b' is protected
>
> Well but, B is derived from A !!
> What says the standard about ?
>
> Thanks
> Olaf
>

you're making a pointer to a new object, and this can't access the variable
b cuz it's protected.


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