#ifndef QUESTION_H
#define QUESTION_H

#include <iostream>
#include <string>

class Question
{
  protected:
	std::string text;
	std::string answer;

  public:
	Question();
	virtual ~Question();
	virtual std::istream& read(std::istream& in, bool readEmptyLine = true);
	virtual std::ostream& print(std::ostream& out) const;
	virtual long ask() = 0; // pure virtual

  public:
	friend inline std::istream& operator>>(std::istream& in, Question& question) { return question.read(in); }
	friend inline std::ostream& operator<<(std::ostream& out, const Question& question) { return question.print(out); }
};

#endif // QUESTION_H