text: //
  //  Observer.h
  //  DesignPatternsCPP
  //
  //  Created by Konrad Werys on 28/12/16.
  //  Copyright © 2016 Konrad Werys. All rights reserved.
  //
  
  #ifndef OBSERVER_H
  #define OBSERVER_H
  
  class Observer {
  public:
      virtual ~Observer(){};
      virtual void update(float temperature, float humidity, float pressure) = 0;
  };
  
  #endif
  