#include <fstream>

void co60() {
   TH1F *hist1 = new TH1F("hist1","title1", 100, 0., 2000);
   TH1F *hist2 = new TH1F("hist2","title2", 100, 0., 2000);

   std::ifstream infile("Co60.txt");
   int x1,x2;
   while (infile >> x1 >> x2) {
      hist1->Fill(x1);
      hist2->Fill(x2);
   }
   auto c = new TCanvas("canvas", "title", 800, 600);
   c->Divide(1,2);
   c->cd(1);
   hist1->Draw();
   c->cd(2);
   hist2->Draw();
}