#infdef _WALKRECORDER_H                   #ifndef _WALKER_H
#define _WALKRECORDER_H                   #define _WALKER_H
                                         
#include "walker.h"                       #include "walkrecorder.h"
class WalkRecorder                        class Walker                                 
{                                         {                                            
  public:                                   public:                                    
    WalkRecorder();                           Walker(WalkRecorder* wrec); 
    void Record(const Walker& walker);        void Walk(int steps); 
    void Print(ostream& out) const;           int  Position() const; 
  private:                                    void ChangeRecorder(WalkRecorder* wrec);
    tmatrix<int> myRecord                   private: 
};                                            int  myPosition; 
                                              WalkRecorder * myRecorder; 
                                          };