UnableToBalanceException.h

#pragma once
 
#include <exception>
#include <iostream>
#include <string>
 
class UnableToBalanceException : public std::exception {
  public:
    explicit UnableToBalanceException(const std::string& message);
 
    friend std::ostream& operator<<(std::ostream& stream, const UnableToBalanceException& e);
 
    const std::string& getMessage() const;
 
  private:
    std::string message;
};