// Fig. 9.2: Time.cpp
// Member-function definitions for class Time.
#include <iostream>
#include <iomanip>
#include <stdexcept> // for illegal_argument exception class
#include "Time.h" // include definition of class Time from Time.h

// using namespace std;
using std::cout;
using std::setfill;
using std::setw;
using std::invalid_argument;

// Time constructor initializes each data member to zero.
Time::Time() 
{ 
   hour = minute = second = 0; 
} // end Time constructor

// set new Time value using universal time
void Time::setTime( int h, int m, int s )
{
   // validate hour, minute and second
   if ( ( h >= 0 && h < 24 ) && ( m >= 0 && m < 60 ) && 
      ( s >= 0 && s < 60 ) ) 
   {
      hour = h;
      minute = m;
      second = s;
   } // end if
   else
      throw invalid_argument( 
         "hour, minute and/or second was out of range" );
} // end function setTime

// print Time in universal-time format (HH:MM:SS)
void Time::printUniversal()
{
   cout << setfill( '0' ) << setw( 2 ) << hour << ":" 
      << setw( 2 ) << minute << ":" << setw( 2 ) << second;
} // end function printUniversal

// print Time in standard-time format (HH:MM:SS AM or PM)
void Time::printStandard()
{
   cout << ( ( hour == 0 || hour == 12 ) ? 12 : hour % 12 ) << ":" 
      << setfill( '0' ) << setw( 2 ) << minute << ":" << setw( 2 )
      << second << ( hour < 12 ? " AM" : " PM" );
} // end function printStandard

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