#include <TH2.h>
#include <TH1.h>
#include <TStyle.h>
#include <TCanvas.h>
#include <TF2.h>
#include <TROOT.h>
#include <TFile.h>
#include <TTree.h>
#include <TBrowser.h>
#include <iostream>

using namespace std;

int main() {

   TFile *f = new TFile("CCD_images_trees.root");
   TTree *TreeB = (TTree*)f->Get("Biases");

   TH2I *Bias_cam0;
   TH2I *Bias_cam0_Avg= new TH2I("Bias0","Bias_cam0_Avg",385, 0, 3080, 385, 0, 3080);
   TH2I *Bias_cam1;
   TH2I *Bias_cam1_Avg= new TH2I("Bias1","Bias_cam1_Avg",385, 0, 3080, 385, 0, 3080);
   TH2I *Bias_cam2;
   TH2I *Bias_cam2_Avg= new TH2I("Bias2","Bias_cam2_Avg",385, 0, 3080, 385, 0, 3080);
   TH2I *Bias_cam3;
   TH2I *Bias_cam3_Avg= new TH2I("Bias3","Bias_cam3_Avg",385, 0, 3080, 385, 0, 3080);

   TreeB -> SetBranchAddress("Bias_cam0", &Bias_cam0);
   TreeB -> SetBranchAddress("Bias_cam1", &Bias_cam1);
   TreeB -> SetBranchAddress("Bias_cam2", &Bias_cam2);
   TreeB -> SetBranchAddress("Bias_cam3", &Bias_cam3);

   Int_t nentriesB = (Int_t)TreeB->GetEntries();
   for (Int_t i=0;i<nentriesB;i++) {

      TreeB->GetEntry(i);//Gets each entry in current tree branch(es)
      cout<<i<<endl;

   }
   return 0;
}