#include <stl.h>
#include <iostream.h>

int odd (int a_)
{
  return a_ % 2;
}

int main ()
{
  vector <int> numbers(100);
  for (int i = 0; i < 100; i++)
    numbers[i] = i % 3;
  int elements = 0;
  count_if (numbers.begin (), numbers.end (), odd, elements);
  cout << "Found " << elements << " odd elements." << endl;
  return 0;
}