关于日期的加减



Date Date::operator++( int )

{

Date temp = *this // hold current state of object

helpIncrement()

return temp

} // end function operator++

const Date &Date::operator+=( int additionalDays )

{

for ( int i = 0 i < additionalDays i++ )

helpIncrement()

return *this }

bool Date::leapYear( int testYear ) const {

if ( testYear 400 == 0 ||

( testYear 100 != 0 && testYear 4 == 0 ) )

　　　　 return true // a leap year else

return false // not a leap year



} // end function leapYear-On the date of the Modified Date Date:: operator++ (int) (Date temp =* this // hold current state of object helpIncrement ()　return temp )// end function operator++ const Date &　Date:: operator+ = (int additionalDays ) (for (int i = 0　i < additionalDays　i++) helpIncrement ()　return* this ) bool Date:: leapYear (int testYear) const (if (testYear　400 == 0 | | (testYear　100! = 0 &　&　testYear　4 == 0)) return true // a leap year else return false // not a leap year)// end function leapYear