// Fig. 9.9: Time.cpp
// Member-function definitions for class Time.
#include <iostream>
#include <iomanip>
#include <stdexcept>
#include "Time.h" // include definition of class Time from Time.h
using namespace std;

// Time constructor initializes each data member 
Time::Time( int hour, int minute, int second ) 
{ 
   setTime( hour, minute, second ); // validate and set time
} // end Time constructor

// set new Time value using universal time
void Time::setTime( int h, int m, int s )
{
   setHour( h ); // set private field hour
   setMinute( m ); // set private field minute
   setSecond( s ); // set private field second
} // end function setTime

// set hour value
void Time::setHour( int h )
{
   if ( h >= 0 && h < 24 )
      hour = h;
   else
      throw invalid_argument( "hour must be 0-23" );
} // end function setHour

// set minute value
void Time::setMinute( int m )
{
   if ( m >= 0 && m < 60 )
      minute = m; 
   else
      throw invalid_argument( "minute must be 0-59" );
} // end function setMinute

// set second value
void Time::setSecond( int s )
{
   if ( s >= 0 && s < 60 )
      second = ( ( s >= 0 && s < 60 ) ? s : 0 ); 
   else
      throw invalid_argument( "second must be 0-59" );
} // end function setSecond

// return hour value
int Time::getHour()
{
   return hour;
} // end function getHour

// return minute value
int Time::getMinute()
{
   return minute;
} // end function getMinute

// return second value
int Time::getSecond()
{
   return second;
} // end function getSecond

// print Time in universal-time format (HH:MM:SS)
void Time::printUniversal()
{
   cout << setfill( '0' ) << setw( 2 ) << getHour() << ":"
      << setw( 2 ) << getMinute() << ":" << setw( 2 ) << getSecond();
} // end function printUniversal

// print Time in standard-time format (HH:MM:SS AM or PM)
void Time::printStandard()
{
   cout << ( ( getHour() == 0 || getHour() == 12 ) ? 12 : getHour() % 12 )
      << ":" << setfill( '0' ) << setw( 2 ) << getMinute()
      << ":" << setw( 2 ) << getSecond() << ( hour < 12 ? " AM" : " PM" );
} // end function printStandard

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