mymatrix.h

it is a usefull thing

//=====================================
// mymatrix.h
//=====================================
#ifndef HEADER_MATRIX
#define HEADER_MATRIX
class Vector;
class Matrix{
  int* m;
  int szl, szr;
public:
  void set(int, int);
  void remove(){ delete[] m; }
  int sizeL(){ return szl; }
  int sizeR(){ return szr; }
  int& elem(int,int);
  friend Vector multiply(Matrix& m, Vector& v);
};//-----------------------------------
#endif   // HEADER_MATRIX