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

int main ()
{
  vector<char> v1; // Empty vector of characters.
  v1.push_back ('h');
  v1.push_back ('i');
  cout << "v1 = " << v1[0] << v1[1] << endl;
  vector<char> v2 (v1);
  v2[1] = 'o'; // Replace second character.
  cout << "v2 = " << v2[0] << v2[1] << endl;
  cout << "(v1 == v2) = " << (v1 == v2) << endl;
  cout << "(v1 < v2) = " << (v1 < v2) << endl;
  return 0;
}