Stupid question about destructor

[Pascal Francq]

Hi,
I have a stupid question concerning two classes:

class a
{
public:
  a(void);
  virtual ~a(void);
};
class b : public a
{
public:
  b(void);
  virtual ~b(void);
};

Must I explicitly called the destructor of a from b, or is it done 
automatically?
-- 


Ir Pascal Francq
Researcher
Université Libre de Bruxelles
CAD/CAM Department
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