<< endl;

int main()
{
  char string;
  int ke;
  cout << "Please enter a key: " << endl;
  cin >> ke;
cout << "Please enter a long string: " << endl;
  cin.getline ( string, 80, '\n' );
  cout << "Your long string was: " << string << endl;
  cin.get();
}

<< flush;

int main()
{
  char string;
  int ke;
  cout << "Please enter a key: " << flush;
  cin >> ke;
  cout << "Please enter a long string: ";<< flush;
  cin.getline ( string, 80, '\n' );
  cout << "Your long string was: " << string << endl;
  cin.get();
}

cin.getline();

int main()
{
  char string;
  int ke;
  cout << "Please enter a key: " << endl;
  cin >> ke;
  cout << "Please enter a long string: "<< endl;
cin.ignore();
  cin.getline ( string, 80, '\n' );
  cout << "Your long string was: " << string << endl;
  cin.get();
}

cin.getline();

int main()
{
  char string;
  int ke;
  cout << "Please enter a key: " << endl;
  cin >> ke;
  cout << "Please enter a long string: "<< endl;
  cin.getline ( string, 80, '\n' );
  cin.getline ( string, 80, '\n' );
  cout << "Your long string was: " << string << endl;
  cin.get();
}

cin.ignore;

cin.ignore();