include <vector>
  include <iostream>
  include <functional>
  include <algorithm>
  using namespace std;
  
  template <typename InputIterator, typename Predicate>
  vector<InputIterator>
  find_all(InputIterator first, InputIterator last, Predicate pred)
  {
    vector<InputIterator> res;
  
    while (true) {
      // find the next match in the current range
      first = find_if(first, last, pred);
      // check if find_if failed to find a match
      if (first == last) {
        break;
      }
      // store this match
      res.push_back(first);
      // shorten the range to start at one past the current match
      ++first;
    }
    return (res);
  }
  
  int main(int argc, char** argv)
  {
    int arr[] = {3, 4, 5, 4, 5, 6, 5, 8};
    vector<int*> all = find_all(arr, arr + 8, bind2nd(equal_to<int>(), 5)); 
    
    cout << "Found " << all.size() << " matching elements: ";
    
    for (vector<int*>::iterator it = all.begin(); it != all.end(); ++it) {
      cout << **it << " ";
    }
    cout << endl;
  
    return (0);
  }