[C++ Error] CGraph.h(9): E2238 Multiple declaration for 'CResistor'
[C++ Error] CGraph.h(8): E2344 Earlier declaration of 'CResistor'

#include <Classes.hpp>
#include <Controls.hpp>
#include <StdCtrls.hpp>
#include <Forms.hpp>

class CResistor 
{ 
private: 
  AnsiString Name;
  float Rez;
  unsigned char iPower;
  TCanvas* Canvas; 
  int l, t;
  float POWERS[];
  int COUNT_POWERS; 
public: 
................................................
#ifndef CGraphH
#define CGraphH
#endif

#ifndef ArrayClassH
#define ArrayClassH

#include "CGraph.h"

class RArray
{
private:
  CResistor* Arr;
  int Len;
public:
  RArray(){Arr = 0; Len = 0;}
  RArray(int k){Arr = 0; Len = 0; SetSize(k);}
  void SetSize(int k);
  ~RArray();
};
#endif