Defining Class BitVector - 2: Object Management

namespace fsu
{
  class BitVector
  {
  public:
    ...
             BitVector    ();                    // construct a BitVector with default size
    explicit BitVector    (size_t);              // construct a BitVector with specified size
             BitVector    (const BitVector&);    // copy constructor      
             ~BitVector   ();                    // destructor
    BitVector& operator = (const BitVector& a);  // assignment operator
    ...
  };
} // namespace fsu