Averager.hpp

//
//  Averager.hpp
//  HW4_R
//
//  Created by Kaloyan Vachkov on 25.05.21.
//

#ifndef Averager_hpp
#define Averager_hpp


#include "Subscriber.hpp"

// You are not allowed to make breaking changes to the class interface,
// but you are allowed to add additional methods/fields, as
// well as MODIFY the existing interface so as to make it
// "more correct" and more compact if possible

// Averager is a type of Subscriber, which saves data and
// returns the average of the data when `read()` is called.
// Data is provided with the `signal()` method.
// Average of N numbers = sum(all numbers) / N
class Averager : public Subscriber {
public:
  Averager(const std::string& id);

  // id is a unique identifier for a Subscriber
  // Should never be changed once initialized
  //const std::string id;
  
  // signal adds a new data point
  //void signal(const Message&);
  
  // read calculates the average of all data points provided so far
  // returns 0 if there's no data points
  int read()const override;
};
#endif /* Averager_hpp */