#include <iostream.h>


// --------------------------------------------- MatrixNxN: Dynamic size matrix
class MatrixNxN
{
public:
   double *A;
   int    N;


   /* ------------------------------------------
      Constructors
      ------------------------------------------ */
   MatrixNxN()
   {
      A = NULL;
      N = 0;
   }

   MatrixNxN(int n)
   {
      cout << "Creating a" << n << "x" << n << " matrix" << endl;
      A = new double[n*n];
      N = n;
   }

   ~MatrixNxN()
   {
      if ( A != NULL )
      {
         cout << "Releasing a" << N << "x" << N << " matrix" << endl;
         delete A;
      }
   }
};


// -----------------------------------------------------------------------


void f()
{
   MatrixNxN a(4);

}

int main(int argc, char *argv[])
{
    f();
}