Dear Netters:

I got a error msg from my code. It looks like:

class A{
public:
 A(){};
 ~A(){};
 B *b;
};

class B{
public:
 B(){};
 ~B(){};
 A *a;
};

Which passed in gnu gcc in UNIX.  The error msg is:
Do not know B, type missed...
CAn anyone help me?
Thanks
Chang

In article 6ao@kasey.umkc.edu, bit@cyberworld.edu (chang) writes:
>
> Dear Netters:
>
> I got a error msg from my code. It looks like:
>
> class A{
> public:
>  A(){};
>  ~A(){};
>  B *b;
> };
>
> class B{
> ...

You must do a forward declaration of B. That is:

class B;
class A{
...  (rest of the code)

---
      _O/ .   ______________________________________________________________
        \_/  / - NeIm - Peter Mustel
        |/  / - kOmP - Erisoft
       ./  / - FoNe - +46 920-42947
__________/ - mAlE - Peter.Mustel@lu.erisoft.se

In article <3bg5l3$6ao@kasey.umkc.edu>, bit@cyberworld.edu says...
>
>
>Dear Netters:
>
>I got a error msg from my code. It looks like:
>
>class A{
>public:
>        A(){};
>        ~A(){};
>        B *b;
>};
>
>class B{
>public:
>        B(){};
>        ~B(){};
>        A *a;
>};
>
>Which passed in gnu gcc in UNIX.  The error msg is:
>Do not know B, type missed...
>CAn anyone help me?
>Thanks
>Chang
>
>
>
You need a forward declaration of B before the declaration of A. Add:

 class B;

to the beginning and you should be set.
--
John Goodrich      addresses too numerous to list...
"It's hard to give democracy to cows. Not enough of them would
vote to be hamburgers." - P.J. O'Rourke