#include "TTree.h"
#include "TFile.h"
#include "TSystem.h"
 
//to store an object from "particle_CLASS" in a tree
void Tutorial_Tree(){

using namespace std;

    TTree t("t_key","t_title");
    Int_t load = gSystem->Load("./particle_CLASS_h.so");
    //define a class and compile it to .so file using >> .x filename++
    // Now load the class definition
   

    cout<<"LOad status is: "<<load<<endl;
        
   particle_CLASS* sparticle = new particle_CLASS();

   t.Branch("particle_info", &sparticle);
    
   sparticle->set_energy(11);
   sparticle->set_position(113,12,3);

    t.Fill();
    t.Scan();
}