Hi!

 I'm now making a simple program to do matrices
operations and i have this problem. Since my base class is a
vector and matrice is a derived one, i can't figure out how
to do the constructor for the matrice...


(see source code below for more information...)

-------------- here's my 2 classes and some code after ------------

class Vector
{
 Reel *elements;
 int nbelement;

public:

 Vector(const int &);
  Vector(const Vector &);

virtual ~Vector();

virtual Vector  operator+ (const Vector &);
virtual Vector  operator- (const Vector &);
virtual Reel  operator* (const Vector &);
virtual Vector & operator= (const Vector &);
virtual Reel &   operator[] (const int &);
friend ostream & operator<< (ostream &, const Vector &);
};


class Matrice : Vector
{
 Vector *rows;
 int nbrows;
 int   nbcol;

public:


 Matrice(const int, const int);
 Matrice(const Matrice &);

 ~Matrice();

 Matrice  operator+ (const Matrice &);
 Matrice  operator- (const Matrice &);
 Matrice  operator* (const Matrice &);
 Matrice& operator= (const Matrice &);
 Matrice  operator~ ();
 Matrice  operator* ();
 Vector & operator[] (const int &);
friend ostream & operator<< (ostream &, const Matrice &);
};


(...)

// CONSTRUCTOR FOR THE VECTOR

Vector::Vector(const int &n)
{
 nbelement = n;

 /***************************************************
 now, i'm initializing an array of elements (vector)
 ****************************************************/

 elements = new Reel[nbelement];

 for (int i=0; i<n ;i+=1)
  elements[n] = 0;
}



(...)

// CONSTRUCTOR FOR THE MATRICE

Matrice::Matrice(const int row, const int col)
{
 nbrows = row;
 nbcol = col;

 /*****************************************************
 Here is my problem! I can't initialize my matrice. So
 how can i initialize an array (private Matrice: "rows")
 that point out to 'row' Vectors????
 *****************************************************/

 rows = new Vector[rows];   // With this, it doesn't work!!!

 for int i=0; i<nbrows ;i++)
  row[i] = 0;

}


(...)

------------------------------- END -----------------------------

 So, if you know how to resolve my problem, i would be glad if
you'd tell me how!!!

 Please help!

 Thanks,

 Fred.

 (jeanf00@dmi.usherb.ca)