// Fig. 9.30: Time.h
// Time class modified to enable cascaded member-function calls.
#pragma once // prevent multiple inclusions of header
#include <string>

class Time {
public:
   // default constructor because it can be called with no arguments
   explicit Time(int hour = 0, int minute = 0, int second = 0);

   // set functions
   Time& setTime(int hour, int minute, int second);
   Time& setHour(int hour); // set hour (after validation)
   Time& setMinute(int minute); // set minute (after validation)
   Time& setSecond(int second); // set second (after validation)

   int getHour() const; // return hour
   int getMinute() const; // return minute
   int getSecond() const; // return second
   std::string to24HourString() const; // 24-hour time format string
   std::string to12HourString() const; // 12-hour time format string
private:
   int m_hour{0}; // 0 - 23 (24-hour clock format)
   int m_minute{0}; // 0 - 59
   int m_second{0}; // 0 - 59
};




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