#include "TCanvas.h"
#include "TROOT.h"
#include "TH1D.h"
#include "TFile.h"

void macro() {
  TFile f("/home/iuser/Dokumente/Uni/BSc/Tutorial/root/data.root");
  TH1D* h;
  TCanvas* canvas = new TCanvas();
  f.GetObject("combined", h);
  h->SetOption("E2");
  h->Draw();
}

int main() {
  macro();
}