#include <iostream>
#include <iomanip>

#include <stdlib.h>
#include <string>
#include <stdio.h>
#include <ctype.h>
#include <math.h>

#include "TSystem.h"
#include "TChain.h"
#include "TTree.h"
#include "TObject.h"
#include "TROOT.h"
#include "TFile.h"


class condTrk
{
public:
   
  //leaves of branch condTrk:
 
  //fheader
  Int_t run;    //filled from standard ntuple variable
  Int_t subrun; //filled from standard ntuple variable

  Double_t var;
  Double_t anothervar;

  Int_t baz;

};

void make_files(){
	gROOT->Reset();
	TFile *file1 = new TFile("testfile.root","NEW");
	TTree *condNtpSR=(TTree*)gDirectory->FindObject("condNtpSR"); 
	if (condNtpSR){
		delete condNtpSR;
		condNtpSR=0;
	}
	condNtpSR = new TTree("condNtpSR","condNtpSR");

	//create branch     

	condTrk *condensed = new condTrk;
	condNtpSR -> Branch("condensed", &condensed);   

	for(int i = 1; i < 10; i++){
		condensed->run = i;
		condensed->subrun = i + 2; 
		condNtpSR->Fill();
	}

	condNtpSR->Write();
	file1->Write();
	file1->Close();
}