import java.io.*;

class UseDrinksMachine7b {
// Shows use of if statement in separate static method

  public static void main(String[] args) throws NumberFormatException, IOException 
  {
   DrinksMachine machine1 = new DrinksMachineD(25);
   DrinksMachine machine2 = new DrinksMachineA(80);
   DrinksMachine cheaper;
   BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
   int amount;
   
   System.out.print("How much do you want to put in a machine? ");
   amount = Integer.parseInt(in.readLine());
   cheaper = 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());
  }

  public static DrinksMachine cheapestMachine(DrinksMachine a,DrinksMachine b)
  {
   if(a.showPrice()<b.showPrice())
      return a;
   else
      return b;
  }
}