[Algorithms] C++ inherited constructors

[Matt A. <de...@gm...>]

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