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why doesnt A::func have access to a B objects internals?

#include<iostream>
using namespace std;
class A;
class B
{
friend class A;
int a;

public:
B(int b) : a(b)
{;}
};

class A
{
static void func(B* b)
{
cout<< b->a << endl;
}
};

int main()
{
B b(10);
A::func(&b);
cin.get();
return 0;
}

Yes , there is nothing wrong with your code. It should run fine, but for one
hiccup.

int main()
> {
> B b(10);
> A::func(&b); // this is an error
>

func in class A is by default a private member.. (though it is static),
hence your program might have not compiled.
try putting it in public scope. I thnk the program should go thro' fine.



"Improving" <> wrote in message
news: oups.com...
> why doesnt A::func have access to a B objects internals?
>
> #include<iostream>
> using namespace std;
> class A;
> class B
> {
> friend class A;
> int a;
>
> public:
> B(int b) : a(b)
> {;}
> };
>
> class A
> {
> static void func(B* b)
> {
> cout<< b->a << endl;
> }
> };
>
> int main()
> {
> B b(10);
> A::func(&b);
> cin.get();
> return 0;
> }
>

On 6 Oct 2005 03:19:14 -0700, "Improving" <>
wrote:

>why doesnt A::func have access to a B objects internals?

It does ... but you need to make A::func() public in order to call it
from main().

>#include<iostream>
>using namespace std;
>class A;
>class B
>{
> friend class A;
> int a;
>
>public:
> B(int b) : a(b)
> {;}
>};
>
>class A
>{
> static void func(B* b)
> {
> cout<< b->a << endl;
> }
>};
>
>int main()
>{
> B b(10);
> A::func(&b);
> cin.get();
> return 0;
>}

--
Bob Hairgrove

Improving wrote:

> #include<iostream>
> using namespace std;
> class A;
> class B
> {
> friend class A;
> int a;
>
> public:
> B(int b) : a(b)
> {;}
> };
>
> class A
> {

public:

> static void func(B* b)
> {
> cout<< b->a << endl;
> }
> };
>
> int main()
> {
> B b(10);
> A::func(&b);
> cin.get();
> return 0;
> }

OMFG what a plonker I am!