#include "TROOT.h"
#include "TH1D.h"
#include "TF1.h"
#include "TCanvas.h"
/*
#include "TStyle.h"
#include "TRandom3.h"
#include "TVirtualFitter.h"
#include "TGraphErrors.h"
#include "TMath.h"
#include "TList.h"

#include <vector>
#include <utility>
#include <iostream>
*/
using namespace std;

int test1() {
  TH1D * h1 = new TH1D("h1","Test Gaussian fit",100,0,10);
  TF1 f1("f1","gaus",0,10);
  f1.SetParameters(100,5,1);
  h1->FillRandom("f1",1000);

  TCanvas* c1 =  new TCanvas("c1","HIstogram FIt example",100,10,900,800);

  c1->cd(1);
  h1->DrawCopy();
  return 0;
}