int TH1exampl2.C()
{

  TH1F *hist = new TH1F("hist","TH1 example",10,0.0,10.0);  
  TH1F *hist1 = new TH1F("hist1","TH1 example",10,0.0,10.0);  
  for(i=0;i<10;i++){	
    if(i<3) x=4;
    if(i>3 && i<=6) x=8;
    if(i>6) x=3;
    hist->Fill(x);
    hist1->Fill(i,i*i);
  }
  hist->Draw();
  hist->GetXaxis()->SetTitle("x-axis");
  hist->GetXaxis()->CenterTitle();
  hist->GetYaxis()->SetTitle("y-axis");
  hist->GetYaxis()->CenterTitle();

  hist1->SetLineColor(2);
  hist1->Draw("same");

}