#include <iostream>
#include <fstream>
#include "TH1F.h"

using namespace std;

int readData(){
  ifstream file("output.data");
  TH1F* h = new TH1F("h","random",100,0.,1.);
  int nlines=0;
  if (file.good()) {
    while (!file.eof()) {
      float x;
      file >> x;
      cout << "Entry:" << nlines << ": X " << x << endl;
      nlines++;
      h->Fill(x);
    }
  }
  h->DrawCopy();
  return nlines;
}