void readcolumn7() {

   TCanvas *tc = new TCanvas("ta","tb",1000,700);                     
  // Open the CSV file
  FILE* file = fopen("pedestal-16-01.csv", "r");
  char line[1024];
  // Skip the first line (header)
  fgets(line, 1024, file);

  double column7[1000];
  int n = 0;

  // Read the data from the CSV file
  while (fgets(line, 1024, file)) {
    double x;
    int y;
    sscanf(line, "%*f,%*f,%*f,%*f,%*f,%*f,%lf,%d", &x, &y);
    column7[n++] = x;
  }

  // Do something with the data in column 7
  for (int i = 0; i < n; i++) {
    cout << column7[i] << endl;
  }

  fclose(file);
    double deltax = x[1]-x[0];
     double xmax = x[0];
     double xmin = x[i-1];
     double nbin = x;
     cout <<nbin<<endl;
     TH1D *histo = new TH1D("histo","histo",nbin,xmin,xmax);
     cout<<"This is Working after while loop ";
/*
     for(int k=0; k<nbin; k++){ 
       sum+=x[k]*y[k];
       sumw+=y[k];

	for(int w=0;w<y[k];w++){
       histo->Fill(x[k]);
	}
     } */
 
     
     histo->SetTitle("1");
     histo->GetXaxis()->SetTitle("c)");
     histo->GetYaxis()->SetTitle("number of events");
         histo->Rebin(5);
  
     histo->Draw("");
}