pointers - c++ combine singleton and visitor pattern -

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i'm having problem pointers. background java , i've still not got hand of using pointers. error is:

syntax error: identifier 'stockcontroller'

from line:

virtual void visit(stockcontroller* stock) = 0;

i've implemented singleton. i'm looking add visitor pattern. have series of operations ill applying collection of objects.

visitor abstract class:

#ifndef visitor_h #define visitor_h  #include "stockcontroller.h"  class visitor { public:     virtual void visit(stockcontroller* stock) = 0; };  #endif

singleton class:

#ifndef stockcontroller_h #define stockcontroller_h  #include <iostream> #include "visitable.h"  using namespace std;  class stockcontroller : public visitable { public:     /*returns instance of class */     static stockcontroller* getinstance();  protected:     /* prevent initialisation unless through method */     stockcontroller();     stockcontroller(const stockcontroller&);     stockcontroller& operator= (const stockcontroller&);  private:      /* class instance */     static stockcontroller* _instance;  };  #endif

visitable.h:

#ifndef visitable_h #define visitable_h  #include "visitor.h"  class visitable { public:     virtual void accept(visitor &visitor) = 0;  };  #endif


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