{

  TH1F* h = new TH1F("h", "my hist", 10, 0, 10);
  TH1F hist("hist", "test", 100, -3, 3);
  hist.FillRandom("gaus", 1000);
  
  file = TFile::Open("file.root", "RECREATE");
  
  h->Write();
  hist.Write();
  file->Close();
}