{
  std::string fin = "C2Trace00000.txt";
  ifstream infile;
  infile.open(fin);
  if(!infile) {
    cout << " File don't exist " <<endl;
    return;
  }
  TFile f("trace.root", "RECREATE");
  TNtuple ntp("ntp", "Time-Amplitude", "t:ampl");

  float t0, t1;
  unsigned long nevents;
  float t, ampl;
  unsigned long nline = 0;
  infile >> t0 >> t1 >> nevents;
  std::cout << nevents <<
    ", [" << t0 << ", " << t1 << "]" << std::endl; 
  while (1) {
    infile >> t >> ampl;
    if (!infile.good()) break;
    ntp.Fill(t, ampl); 
    nline++;
  }
  ntp.Write();
  f.Close();
}