#ifndef AliAnalysisTaskPt_cxx
#define AliAnalysisTaskPt_cxx

// example of an analysis task creating a p_t spectrum
// Authors: Panos Cristakoglou, Jan Fiete Grosse-Oetringhaus, Christian Klein-Boesing

class TH1F;
class AliESDEvent;
class AliVVfriendEvent;
class AliVVevent;
class AliESDtrackCuts;
class TList;

#include "AliAnalysisTask.h"

class AliAnalysisTaskPt : public AliAnalysisTask {
 public:
 AliAnalysisTaskPt() : AliAnalysisTask(), fESD(0), fESDfriend(0), fHistPt(0), fCuts(0), fEv(0), fHistQ(0), fListOut(0) {}
  AliAnalysisTaskPt(const char *name);
  virtual ~AliAnalysisTaskPt() {}
  
  virtual void   ConnectInputData(Option_t *);
  virtual void   CreateOutputObjects();
  virtual void   Exec(Option_t *option);
  virtual void   Terminate(Option_t *);

 private:
  AliVVevent*       fESD;          // ESD object
  AliVVfriendEvent* fESDfriend;    // ESD friend object
  TH1F*             fHistPt;       // Pt spectrum
  AliESDtrackCuts*  fCuts;         // cuts
  Int_t fEv;
  TH1F*             fHistQ;        // TPC clusters Q spectrum
  TList*            fListOut;      // output list

  AliAnalysisTaskPt(const AliAnalysisTaskPt&); // not implemented
  AliAnalysisTaskPt& operator=(const AliAnalysisTaskPt&); // not implemented
  
  ClassDef(AliAnalysisTaskPt, 1); // example of analysis
};

#endif