#include "generator.macro"

void

read_event_info(const char *fname)

{

auto fin = TFile::Open(fname);

auto tin = (TTree*)fin->Get("o2sim");

auto head = new o2::dataformats::MCEventHeader;

tin->SetBranchAddress("MCEventHeader.", &head);

bool isvalid;

for (int iev = 0; iev < tin->GetEntries(); ++iev) {

tin->GetEntry(iev);

std::cout << " ---------------" << std::endl;

auto Xsection = Generator::getXsection(head, isvalid);

if (isvalid)

std::cout << " Xsection = " << Xsection << std::endl;

auto XsectionErr = Generator::getXsectionErr(head, isvalid);

if (isvalid)

std::cout << " XsectionErr = " << XsectionErr << std::endl;

auto Nmpi = Generator::getNmpi(head, isvalid);

if (isvalid)

std::cout << " Nmpi = " << Nmpi << std::endl;

}

}