import java.io.*;

class UseDrinksMachine7f {
// Shows use of instanceof

  public static void main(String[] args) throws NumberFormatException, IOException 
  {
   DrinksMachine machine1 = new DrinksMachineA(25);
   DrinksMachine machine2 = new DrinksMachineB(80);
   DrinksMachine cheaper;
   BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
   int amount;
   String reply;
   
   System.out.print("How much do you want to put in a machine? ");
   amount = Integer.parseInt(in.readLine());
   cheaper = DrinksMachineFuncs.cheapestMachine(machine1,machine2);
   cheaper.addMoney(amount);
   System.out.print("When you press the coke button on the cheaper machine ");
   System.out.println("you get: "+cheaper.pressCoke());
   if(cheaper instanceof DrinksMachineB)
      {
       System.out.print("And when you press the change button on it you get: ");
       reply=((DrinksMachineB) cheaper).pressChange();
       System.out.println(reply);
      }
   else
      System.out.println("There is no change button on this machine");
  }

}