// Fig. 9.15: Time.cpp
// Time class member-function definitions.
#include <stdexcept>
#include "Time.h" // include definition of class Time
using namespace std;

// constructor function to initialize private data; calls member function
// setTime to set variables; default values are 0 (see class definition)
Time::Time( int hr, int min, int sec ) 
{
   setTime( hr, min, sec ); 
} // end Time constructor

// set values of hour, minute and second
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

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

// POOR PRACTICE: Returning a reference to a private data member.
int &Time::badSetHour( int hh )
{
   if ( hh >= 0 && hh < 24 )
      hour = hh;
   else
      throw invalid_argument( "hour must be 0-23" );

   return hour; // DANGEROUS reference return
} // end function badSetHour

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