In article <3v2edj$n6u@dub-news-svc-6.compuserve.com>, 71754.2053@compuserve.com (Wayne  Conrad) says:
>
>>Can I declare a constructor and a destructor for a structure (struct {})?
>
>Yep.
>
>The difference between a struct and a class in C++ is very simple.  In
>a class, members start out being private unless you say otherwise with
>the "public:" or "protected:" keywords.  In a struct, members start
>out being public unless you say otherwise with the "private:" or
>"protected:" keywords.
>
>As far as I know, that's the only difference between a class and a
>struct.
>










The same reason holds good for the derivation signature also.

- Ramesh

No problem.
But be aware that then You can no longer initialize it
by using the ={...} list.
So you should rather declare it as class with private members at all.

A technique I sometimes use when I want to use c-tor as well as aggregate initalization
is to declare a struct as Base with all the member functions I need
and then derive a special class supplying the constructor.

But this should only be done with very simple and straightforward classes
(e.g. PointXY or so) since the public members in the struct
violate the OOP information hiding principle.

--
*** Dipl.-Ing.  Ralf  Boecker    Universitaet GH Kassel     ***
*** eMail: boecker@hrz.uni-kassel.de  FB 16 - Elektrotechnik     ***
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In article <3uvqfv$c74@taiwan.informatik.uni-rostock.de> schmitz@.egd.egd.igd.fhg.de (Christian Schmitz) writes:
> Can I declare a constructor and a destructor for a structure (struct {})?

Sure.  `struct' simply means `class' with `public:' default member access.
Check any C++ book.
--
Hallvard

Also, the derivation behaves like this :

class A : B {} => A is privatly derived from B

and

struct A : B {} => A is publicly derived from B

-- Etay Bogner,
-- ebogner@ird.scitex.com ( OLD ),
-- Etay_Bogner@mail.stil.scitex.com,
-- Scitex Corp.
-- Israel.

Can I declare a constructor and a destructor for a structure (struct {})?

>Can I declare a constructor and a destructor for a structure (struct {})?

Yep.

The difference between a struct and a class in C++ is very simple.  In
a class, members start out being private unless you say otherwise with
the "public:" or "protected:" keywords.  In a struct, members start
out being public unless you say otherwise with the "private:" or
"protected:" keywords.

As far as I know, that's the only difference between a class and a
struct.