set & get methods

Set functions : Perform validity checks before modifying private data and notify if invalid values
 

Get functions:“Query” functions that control format of data returned.

 

#include <iostream>
using namespace::std;

class Time
{
public:
Time( int = 0, int = 0, int = 0 );

void setTime( int, int, int );
void setHour( int );
void setMinute( int );
void setSecond( int );

int getHour();
int getMinute();
int getSecond();

void printUniversal();
void printStandard();

private:
int hour;
int minute;
int second;
};

void incrementMinutes( Time &, const int );

Time::Time( int hr, int min, int sec )
{ setTime( hr, min, sec ); }

void Time::setTime( int h, int m, int s )
{
setHour( h );
setMinute( m );
setSecond( s );
}

void Time::setHour( int h )
{ hour = ( h >= 0 && h < 24 ) ? h : 0; }

void Time::setMinute( int m )
{ minute = ( m >= 0 && m < 60 ) ? m : 0; }

void Time::setSecond( int s )
{ second = ( s >= 0 && s < 60 ) ? s : 0; }

int Time::getHour()
{ return hour; }

int Time::getMinute()
{ return minute; }

int Time::getSecond()
{ return second;}

void Time::printUniversal()
{ cout << hour << ":" << minute << ":"<< second;}

void Time::printStandard()
{
cout << ( ( hour == 0 || hour == 12 ) ? 12 : hour % 12 )
<< ":" << minute << ":" << second
<< ( hour < 12 ? " AM" : " PM" );
}
//----------------------
int main()
{
Time t;

t.setHour( 17 );
t.setMinute( 34 );
t.setSecond( 25 );

cout << "Result of setting all valid values:\n"
<< " Hour: " << t.getHour()
<< " Minute: " << t.getMinute()
<< " Second: " << t.getSecond();

t.setHour( 234 ); // invalid hour set to 0
t.setMinute( 43 ); // set minute to valid value
t.setSecond( 6373 ); // invalid second set to 0

cout << "\n\nResult of attempting to set invalid hour and"
<< " second:\n Hour: " << t.getHour()
<< " Minute: " << t.getMinute()
<< " Second: " << t.getSecond() << "\n\n";

t.setTime( 11, 58, 0 );
incrementMinutes( t, 3 );
return 0;
}
//----------------------
// add specified number of minutes to a Time object
void incrementMinutes( Time &tt, const int count )
{
cout << "Incrementing minute " << count
<< " times:\nStart time: ";
tt.printStandard();

for ( int i = 0; i < count; i++ )
{
tt.setMinute( ( tt.getMinute() + 1 ) % 60 );

if ( tt.getMinute() == 0 )
tt.setHour( ( tt.getHour() + 1 ) % 24 );

cout << "\nminute + 1: ";
tt.printStandard();
}
cout << endl;
}