include <functional>
  include <algorithm>
  include <string>
  include <vector>
  include <iostream>
  using namespace std;
  
  void findEmptyString(const vector<string>& strings)
  {
    vector<string>::const_iterator it = find_if(strings.begin(), strings.end(),
                                                mem_fun_ref(&string::empty));
  
    if (it == strings.end()) {
      cout << "No empty strings!\n";
    } else {
      cout << "Empty string at position: " << it - strings.begin() << endl;
    }
  }
  
  int main(int argc, char** argv)
  {
    vector<string> myVector;
  
    string one = "blah";
    string two = "";
    myVector.push_back(one);
    myVector.push_back(one);
    myVector.push_back(two);
    myVector.push_back(one);
  
    findEmptyString(myVector);
  
    return (0);
  }