change format to painful way of adding string

benchmarks/barrel_ecal/scripts/emcal_barrel_energy_scan_analysis.cxx

@@ -19,33 +19,37 @@
 using ROOT::RDataFrame;
 using namespace ROOT::VecOps;
 
-  // Setting for graphs
-  gROOT->SetStyle("Plain");
-  gStyle->SetOptFit(1);
-  gStyle->SetLineWidth(2);
-  gStyle->SetPadTickX(1);
-  gStyle->SetPadTickY(1);
-  gStyle->SetPadGridX(1);
-  gStyle->SetPadGridY(1);
-  gStyle->SetPadLeftMargin(0.14);
-  gStyle->SetPadRightMargin(0.14);
-
 
-void save_canvas(TCanvas* c, std::string label, double E)
+void save_canvas(TCanvas* c, std::string label)
 {
-    c->SaveAs(std::format("results/{}_{}.png",label, E));
-    c->SaveAs(std::format("results/{}_{}.pdf",label, E));
+    
+  std::string dir = "result/";
+  std::string png = ".png";
+  std::string pdf = ".pdf";
+
+  std::string plot_name_png = dir + label + png;  
+  std::string plot_name_pdf = dir + label + pdf;
+
+  c->SaveAs(plot_name_png);
+  c->SaveAs(plot_name_pdf)
+
+  //c->SaveAs(std::format("results/{}.png",label));
+  //c->SaveAs(std::format("results/{}.pdf",label));
 }
 
-void save_canvas(TCanvas* c, std::string label)
+void save_canvas(TCanvas* c, std::string label, double E)
 {
-    c->SaveAs(std::format("results/{}.png",label));
-    c->SaveAs(std::format("results/{}.pdf",label));
+  std::string label_with_E = label + std::to_string(E); 
+  save_canvas(c, label_with_E);
 }
 
 std::tuple <double, double> extract_sampling_fraction_parameters(double E)
 {
-  auto input_fname = std::format("sim_output/energy_scan/{}/emcal_barrel_uniform_electrons.root", E);
+  
+  std::string input_dir = "sim_output/energy_scan/";
+  std::string input_file = "/emcal_barrel_uniform_electrons.root";
+
+  std::string input_fname = input_dir + std::to_string(E) + input_file;
   ROOT::EnableImplicitMT();
   ROOT::RDataFrame d0("events", input_fname);
 
@@ -163,13 +167,25 @@ std::vector<double> read_scanned_energies(std::string input_energies_fname)
     }
     else
     {
-        std::cout << std::format("Unable to open file {}", input_energies_fname);
+        std::cout << "Unable to open file" << input_energies_fname << std::endl;
         abort();
     }
 };
 
 void emcal_barrel_electrons_energy_scan_analysis()
 {
+
+  // Setting for graphs
+  gROOT->SetStyle("Plain");
+  gStyle->SetOptFit(1);
+  gStyle->SetLineWidth(2);
+  gStyle->SetPadTickX(1);
+  gStyle->SetPadTickY(1);
+  gStyle->SetPadGridX(1);
+  gStyle->SetPadGridY(1);
+  gStyle->SetPadLeftMargin(0.14);
+  gStyle->SetPadRightMargin(0.14);
+
     vector<double> scanned_energies = read_scanned_energies("emcal_barrel_energy_scan_points.txt");
     TGraph gr_fsam(scanned_energies.size());
     TGraph gr_fsam_res(scanned_energies.size());