// function example
#include <iostream>
#include "TChain.h"
#include "TCanvas.h"
#include "TCutG.h"
#include "TFile.h"
#include "TTree.h"
#include <stdlib.h>
#include <stdio.h>
#include <fstream>
#include "THashList.h"
#include "TH1F.h"

// root-config --cflags -- gives you the -pthread bla

//g++ -c mope.cpp -I$ROOTSYS/include -pthread -m64 -I/.../include
//g++ -o lex `root-config --glibs` mope.o 
// ./lex

using namespace std;

float addition (int a)
{
Char_t iggy[200];
TString ig;
TH1F *rip;
THashList last;

sprintf(iggy,"/media/e4bdd8ff-8ade-4a84-a172-9d31a2653be1/rootfiles/addback/hists/hists_0%iab.root",a);
ig=iggy;
TFile *f = new TFile(ig);
f->ls();
last = (THashList*)gDirectory->Get("allhists");
//rip = (TH1F*)allhists("h50[0]")->Clone();
//rip->GetXaxis()->SetRangeUser(4250,4500);
//rip->Fit("gaus"); 
float r;
//r=(float)(gaus->GetParameter(1));
r=a*0.84;
  return (r);
}

int main ()
{
int a,i;
 ofstream es("drift.txt");
  float z;
for(int i=264;i<266;i++)
{
  z = addition (i);
es <<z<<endl;
}
  cout << "The result is " << z <<endl;
  es.close();
  return 0;
}