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

char* word1 = "ABCDEFGHIJKLMNO";
char* word2 = "LMNOPQRSTUVWXYZ";

int main ()
{
  ostream_iterator <char> iter (cout, " ");
  cout << "word1: ";
  copy (word1, word1 + ::strlen (word1), iter);
  cout << "\nword2: ";
  copy (word2, word2 + ::strlen (word2), iter);
  cout << endl;
  set_difference (word1, word1 + ::strlen (word1),
                  word2, word2 + ::strlen (word2),
                  iter,
                  less<char>());
  cout << endl;
  return 0;
}