// script of an example application of TestClass to test root io possibilities
{
  gROOT->Reset();
  cout << "loading shared library\n";
  gSystem->Load("libTestClass.so"); // load shared library
  
  // create a file 
  TFile *file = new TFile("tc.root","RECREATE");

  // open a root tree name =T; title="this is root tree"
  TTree *tree = new TTree("T","this is root tree");

  // create a branch

  //  tree->Branch("TC branch","TestClass",&&tc,64000,1); //this doesn't work
  TestClass *tc = new TestClass();
  tree->Branch("TCbranch","TestClass",&tc,64000,1); // this should work
  // don't put spaces in the first name! It makes a lot of problems with
  // TTree->MakeClass() and TTree->MakeCode()


  //write some events
  for (Int_t i=0;i<5;i++) {
    tc->SetX(1.*i);
    tc->SetY(2.*i);
    tc->SetArray(i);
    tc->PrintArray();
    tree->Fill();
  }

  // now display it
  tree->Draw("arr"); //why all entries are one?

  file->Write();

}