text: /* The following code example is taken from the book
   * "The C++ Standard Library - A Tutorial and Reference"
   * by Nicolai M. Josuttis, Addison-Wesley, 1999
   *
   * (C) Copyright Nicolai M. Josuttis 1999.
   * Permission to copy, use, modify, sell and distribute this software
   * is granted provided this copyright notice appears in all copies.
   * This software is provided "as is" without express or implied
   * warranty, and with no claim as to its suitability for any purpose.
   */
  #include <iostream>
  #include <string>
  #include <algorithm>
  #include <iterator>
  #include <vector>
  using namespace std;
  
  int main()
  {
      /* create a string vector
       * - initialized by all words from standard input
       */
      vector<string> coll((istream_iterator<string>(cin)),
                          istream_iterator<string>());
  
      // sort elements
      sort (coll.begin(), coll.end());
  
      // print all elements ignoring subsequent duplicates
      unique_copy (coll.begin(), coll.end(),
                   ostream_iterator<string>(cout, "\n"));
  }
  