Re: Inheritance from template problem

From:
Paavo Helde <myfirstname@osa.pri.ee>
Newsgroups:
comp.lang.c++
Date:
Sun, 03 Jun 2012 13:19:57 -0500
Message-ID:
<XnsA067D9022A4EEmyfirstnameosapriee@216.196.109.131>
DSF <notavalid@address.here> wrote in
news:va8ns7tbn6rce8sf7c93bh6u7911icmsg6@4ax.com:

Hello,

 My inheritance problem is my uncle left me $10 million, but to get it
I have to spend the night in an isolated haunted house. My uncle
didn't like me. I think it's a plot to kill me! :o)

Seriously, when I compile the following code, I get the error: "B::i
is not accessible" on the line "f = Tptr->i". It compiles fine if "i"
is made public. I assume it has something to do with the declaration
of class "D".
I tried class "D : public A<B>, public B" with the same results.

Have I missed something simple?


I think yes. B::i is declared protected, meaning that only B or a class
derived from B can access it. There is no class derived from B. So...?

hth
Paavo

template <class T> class A
{
protected:
   T *Tptr;
};

class B
{
public:

protected:
   int i;
};

class D : public A<B>
{
public:
   void foo(void);
};

void D::foo(void)
{
   int f;

   f = Tptr->i;
}

DSF

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