Re: [Algorithms] C++ inherited constructors

[Michael H. <he...@po...>]

Make class A's default constructor do nothing, and make a second one
that takes a useless argument.  You can do it like this:

class A {
protected:
    A()    {}    // B can call this, but users will get warnings if
they use it
public:
    A(bool x);
};

class B: public A {
public:
    B();        // calls A(), which does nothing
};

mike

----- Original Message -----
From: "Matt Adams" <de...@gm...>
To: <gda...@li...>
Sent: Saturday, July 15, 2000 3:22 AM
Subject: [Algorithms] C++ inherited constructors


> Hi,
>
> I got a question about the C++ class hierarchy.
>
> class a
> {
>     a () {...}; // constr a
> };
>
> class b : a
> {
>     b () {...}; // constr b
> };
>
> b instance;
>
> When creating an instance of b, constructors for both class a and
class b
> are called.
> Is there a way to suppress the automatic calling of constructor a ?
> Or something like 'overloading' the old constructor by a new one ?
> I couldn't find anything like that in the compiler docs.
>
> Any help appreciated,
> Matt
>
>
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