Re: Stroustrup 5.9 exercise 11

that is what "std::set" does. here is my try with a compile-time error
i am unable to figure out why. i tried eve "std::ostream_iterator" but
same error:

-------- PROGRAMME --------

#include<iostream>

#include<string>
#include<algorithm>
#include<set>
#include<iterator>

int main()
{
  std::string input_word;
  std::set<std::string> s; // collects inputs

  while(std::cin >> input_word && input_word != "quit")
    {
      s.insert(input_word);
    }

  std::cout << "\n *** Printing Sorted Words ***\n";

  std::copy(s.begin(), s.end(),
ostream_iterator<std::string>(std::cout, '\n');

  return 0;
}

----- OUTPUT ---------
[arch@voodo tc++pl]$ g++ -ansi -pedantic -Wall -Wextra -O
ex_5.9-11_modified.cpp
ex_5.9-11_modified.cpp: In function 'int main()':
ex_5.9-11_modified.cpp:30: error: 'ostream_iterator' was not declared
in this scope
ex_5.9-11_modified.cpp:30: error: expected primary-expression before
'>' token
ex_5.9-11_modified.cpp:30: warning: left-hand operand of comma has no
effect
[arch@voodo tc++pl]$