void title()
{
  TCanvas* c1 = new TCanvas("c1","axis", 1);
  TF1 *fa1 = new TF1("fa1","sin(x)/x",0,10);
  fa1->GetXaxis()->SetTitle("axis x title");
  fa1->GetYaxis()->SetTitle("axis y title");
  fa1->Draw();
  c1->Print("axis.root");
  c1->Print("axis.png");
  c1->Print("axis.eps");
}