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Operator overloading implementation in CPP
This program is using the Date function in a formatimplementing
operator overloading functionalities.
#include <iostream>
#include <iomanip>
#include "DateTime.h"
usingstd::cout;
usingstd::endl;
/*********************************************************************
*******
**********************************************************************
******
**
**
**
**
**
**
** class Date implementation code
**
**
**
**
**
**
**
**********************************************************************
******
**********************************************************************
******/
// default constructor
Date::Date(int year, int month, int day)
{
this->yyyy = year;
this->mm = month;
this->dd = day;
}
//copy constructor
Date::Date(const Date& d)
{
this->yyyy = d.yyyy;
this->mm = d.mm;

this->dd = d.dd;
}
int Date::getDay()
{
return this->dd;
}
int Date::getMonth()
{
return this->mm;
}
int Date::getYear()
{
return this->yyyy;
}
void Date::setDate(int year, int month, int day)
{
this->yyyy = year;
this->mm = month;
this->dd = day;
}
void Date::setDate(const Date& d)
{
this->yyyy = d.yyyy;
this->mm = d.mm;
this->dd = d.dd;
}
// Date class stream extraction operator
std::istream& operator>>(std::istream&in, Date &d)
{
charch;
in>>d.yyyy; //extract the year and store them in data member yyyy
in>>ch; //extract and discard the dilimiting character
in>> d.mm; //extract the month and store them in data member mm
in>> d.dd; ///extract the day and store them in data member dd
return in;
} //END overloaded stream extraction operator for Date class

/*********************************************************************
*******
* Date class stream insertion operator
*
**********************************************************************
******/
std::ostream& operator<<(std::ostream&os, const Date &d)
{
os<<std::setfill('0');
os<<std::setw(4) <<d.yyyy<< "/";
os<<std::setw(2) << d.mm << "/";
os<<std::setw(2) << d.dd;
os<<std::setfill(' ');
returnos;
} //END overloaded stream insertion operator for Date class
bool Date::operator==(const Date& d) const
{
return (this->yyyy == d.yyyy&& this->mm == d.mm && this->dd ==
d.dd);
}
bool Date::operator!=(const Date& d) const
{
return !(this->yyyy == d.yyyy&& this->mm == d.mm && this->dd ==
d.dd);
}
bool Date::operator<(const Date& d) const
{
if (this->yyyy<d.yyyy)
{
return true;
}
else if (this->mm < d.mm)
{
return true;
}
else if (this->dd< d.dd)
{
return true;
}
}
bool Date::operator<=(const Date& d) const
{
if (this->yyyy<= d.yyyy)

{
return true;
}
else if (this->mm <= d.mm)
{
return true;
}
else if (this->dd<= d.dd)
{
return true;
}
}
bool Date::operator>(const Date& d) const
{
if (this->yyyy>d.yyyy)
{
return true;
}
else if (this->mm > d.mm)
{
return true;
}
else if (this->dd> d.dd)
{
return true;
}
}
bool Date::operator>=(const Date& d) const
{
if (this->yyyy>= d.yyyy)
{
return true;
}
else if (this->mm >= d.mm)
{
return true;
}
else if (this->dd>= d.dd)
{
return true;
}
}
Date Date::operator =(const Date& d)
{
if (this != &d)
{
//not a self assignment, OK to proceed
yyyy = d.yyyy;
mm = d.mm;

dd = d.dd;
}
return d;
}
/*********************************************************************
*******
**********************************************************************
******
**
**
** class Time implementation code
**
**
**
** This code is provided to students
**
** in COSC 052 Spring 2016 to use in
**
** part or in total for class projects.
**
** Students may use this code as their
**
** own, without any attribution.
**
**
**
**********************************************************************
******
**********************************************************************
******/
/*********************************************************************
*******
* Time class default constructor
*
**********************************************************************
******/
Time::Time(int hour, int minute)
{
#ifdef DEBUG_DATE

std::cout<< "Entered constructor Time::Time(int, int, int)"
<<std::endl;
#endif
setTime(hour, minute);
#ifdef DEBUG_DATE
std::cout<< "Exiting constructor Time::Time(int, int)"
<<std::endl;
#endif
} //END constructor with parameters for Time class
/*********************************************************************
*******
* Time class member function setTime
*
**********************************************************************
******/
void Time::setTime(int hour, int minute)
{
hh = hour;
mm = minute;
} //END member function Time::setTime
/*********************************************************************
*******
* Time class stream extraction operator
*
**********************************************************************
******/
std::istream& operator>>(std::istream&in, Time &t)
{
charch;
in>>t.hh; //extract the hours and store them in data member hh
in>> t.mm; //extract the minutes and store them in data member mm
return in;
} //END overloaded stream extraction operator for Time class

/*********************************************************************
*******
* Time class stream insertion operator
*
**********************************************************************
******/
std::ostream& operator<<(std::ostream&os, const Time &t)
{
os<<std::setfill('0');
os<<std::setw(2) <<t.hh<< ":";
os<<std::setw(2) << t.mm;
os<<std::setfill(' ');
returnos;
} //END overloaded stream insertion operator for Time class
/*********************************************************************
*******
* Time class assignment operator
*
**********************************************************************
******/
Time Time::operator=(const Time &rhsObj)
{
if (this != &rhsObj)
{
//not a self assignment, OK to proceed
hh = rhsObj.hh;
mm = rhsObj.mm;
}
returnrhsObj;
} //END overloaded assignment operator for Time class

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