void Iterator()
{
  std::vector<int> array;   // dynamic array of type int
  std::list<int> list_array;

  for(int i = 0; i < 10; ++i )
  {
    array.push_back( i*2 );
    list_array.push_back( i*4 );
  }

  //vector<int>::iterator it = array.begin();  // instance

  //for( it = array.begin() ; it != array.end() ; ++it )
  //for( ; it != array.end() ; ++it )
   for( vector<int>::iterator it = array.begin(); it != array.end() ; ++it )
     {
     cout << *it << endl;  // indirect reference using *
     }
   for( list<int>::iterator it = list_array.begin(); it != list_array.end() ; ++it )
     {
     cout << *it << endl;  // indirect reference using *
     }
   for( auto itr = array.begin(); itr != array.end() ; ++itr )
     {
     cout << *itr << endl;  // indirect reference using *
     }
  return;
}


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