#ifndef _matrix_h_
#define _matrix_h_
#include <iostream>
using namespace std;

typedef double ValType; 

class  Matrix
{
public:
  Matrix(int nrows, int ncols);
  ~Matrix();

  int num_rows();
  int num_cols();
  ValType & operator()(int i, int j); // sostituisce il metodo Value 

private:  
  int _nrows, _ncols;
  ValType *_values;
};

ostream & operator << (ostream & os, Matrix & mat); // sostituisce il metodo Print

#endif