#include <iostream.h>

int main() 
{
   unsigned nombreDeNotes;
   cout << "Nombre de notes ?" << endl;
   cin >> nombreDeNotes;
   double *notes = new double[nombreDeNotes];
   double somme = 0.0;
   for (unsigned i=0; i<nombreDeNotes; i++) {
      cout << "Note n°" << i+1 << endl;
      cin >> notes[i];
      somme += notes[i];
   }
   cout << "moyenne : " << somme/nombreDeNotes << endl;
   delete[] notes;
   return 0;
}