#include <cstdlib>

int riempi(){
  
  TH1F* isto=new TH1F("isto","Distribuzione flat", 100, 0, 1);
  int quanti=1000;
  for(int i=0; i<quanti; ++i){
    float num = (1.*rand())/RAND_MAX;
    cout <<" Riempio con "<<num<<endl;
    isto->Fill(num);
  }
  isto->DrawCopy();
  cout <<" Media "<<isto->GetMean()<<endl;
  cout <<" RMS "<<isto->GetRMS()<<endl;
  return 0;
}