Add std namespace

benchmarks/imaging_ecal/scripts/emcal_barrel_energy_scan_analysis_pi_e.cxx

@@ -191,7 +191,7 @@ std::tuple <double, double> extract_sampling_fraction_parameters(std::string E_l
       auto nbins = helectron->GetXaxis()->GetNbins();
       auto integral_helectron = helectron->Integral();
       auto ngen_helectron = delectrons.Count();
-      cout << infoHists[col].name << ": Thrown electron events: " << ngen_helectron << " Histo integral: " << integral_helectron << endl;
+      std::cout << infoHists[col].name << ": Thrown electron events: " << ngen_helectron << " Histo integral: " << integral_helectron << std::endl;
       auto efficiency_cut_bin = 0;
       for(int bin=1; bin<=nbins;bin++){
         auto inegral_helectron_bin = helectron->Integral(1,bin);
@@ -202,10 +202,10 @@ std::tuple <double, double> extract_sampling_fraction_parameters(std::string E_l
           break;
         }
       }
-      cout << "efficiency cut bin: " << efficiency_cut_bin << " efficiency: " << 1 - helectron->Integral(1,efficiency_cut_bin)/ngen_helectron;
+      std::cout << "efficiency cut bin: " << efficiency_cut_bin << " efficiency: " << 1. - (helectron->Integral(1,efficiency_cut_bin))/ngen_helectron << std::endl;
       auto ngen_hpion = dpions.Count();
       auto pion_suppresion = hpion->Integral(efficiency_cut_bin, nbins)/ngen_hpion;
-      cout << "pion supression: " << pion_suppresion << endl;
+      std::cout << "pion supression: " << pion_suppresion << std::end;
     }
 
   }