Помогите с курсовой!!! - C++

#include <iostream.h>
#include <math.h>

int main() {
  int const N = 13;
  double mass[N] = {0.0, 1.1, 0.2, 0.3, 5.4, 2.5, 4.0, 7.1, 1.8, 2.9, 12.1, 0.11, 3.12};
  double s = 0;
  int i;

  for(i = 0; i < N; i++) {
    s += mass[i];
  }
  s = ceil(s / N);
  for(i = 0; i < N; i++) {
    if(mass[i] == s) {
      cout << 'mass[' << i << '] = ' << mass[i] << '
';
      break;
    }
  }
  return 0;
}