Write a program that randomly generates 100 dates and store theminto a vector. Use the Date.h provided . The dates generated mustbe within 1000 days after 1/1/2000. and Sort the 100 datesgenerated in ascending order.
date.h
#ifndef DATE_H_
#define DATE_H_
#include
#include
using namespace std;
class Date {
  friend ostream &operator<<( ostream &,const Date & );
private:
  int day;
  int month;
  int year;
static const int days[]; // array of days per month
void helpIncrement(); // utility function for incrementing date
public:
  Date(int=1, int=1, int=0);
  void setDate(int,int,int);
  bool leapYear( int ) const; // is date in a leapyear?
bool endOfMonth( int ) const; // is date at the end of month?
Date &operator++(); // prefix increment operator
Date operator++( int ); // postfix increment operator
const Date &operator+=( int ); // add days, modify object
bool operator<(const Date&) const;
  void showdate();
};
const int Date::days[] =
{ 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
Date::Date(int d, int m, int y) {
day = d;
month = m;
year = y;
// initialize static member at file scope; one classwide copy
}
// set month, day and year
void Date::setDate( int dd, int mm, int yy )
{
year = yy;
month = ( mm >= 1 && mm <= 12 )? mm : 1;
// test for a leap year
if ( month == 2 && leapYear( year ) )
day = ( dd >= 1 && dd <= 29 ) ? dd : 1;
else
day = ( dd >= 1 && dd <= days[ month ] ) ? dd :1;
} // end function setDate
// if the year is a leap year, return true; otherwise, returnfalse
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
// determine whether the day is the last day of the month
bool Date::endOfMonth( int testDay ) const
{
if ( month == 2 && leapYear( year ) )
return testDay == 29; // last day of Feb. in leap year
else
return testDay == days[ month ];
} // end function endOfMonth
// function to help increment the date
void Date::helpIncrement()
{
// day is not end of month
if ( !endOfMonth( day ) )
day++; // increment day
else
if ( month < 12 ) // day is end of month and month < 12
{
month++; // increment month
day = 1; // first day of new month
} // end if
else // last day of year
{
year++; // increment year
month = 1; // first month of new year
day = 1; // first day of new month
} // end else
} // end function helpIncrement
// overloaded prefix increment operator
Date &Date::operator++()
{
helpIncrement(); // increment date
return *this; // reference return to create an lvalue
} // end function operator++
// overloaded postfix increment operator; note that the
// dummy integer parameter does not have a parameter name
Date Date::operator++( int )
{
Date temp = *this; // hold current state of object
helpIncrement();
// return unincremented, saved, temporary object
return temp; // value return; not a reference return
} // end function operator++
// add specified number of days to date
const Date &Date::operator+=( int additionalDays )
{
for ( int i = 0; i < additionalDays; i++ )
helpIncrement();
return *this; // enables cascading
} // end function operator+=
// overloaded output operator
ostream &operator<<( ostream &output, const Date&d )
{
// static string monthName[ 13 ] = { \"\", \"January\",\"February\",
// \"March\", \"April\", \"May\", \"June\", \"July\", \"August\",
// \"September\", \"October\", \"November\", \"December\" };
//
// output << d.day << \" \" << monthName[ d.month ]<< \" \"<< d.year;
  output << setfill('0')
        << setw(2)<< d.day << '/'
        << setw(2)<< d.month << '/'
        << setw(4)<< d.year;
  return output; // enables cascading
} // end function operator<<
bool Date::operator<(const Date& right) const {
  return (year < right.year || (year == right.year&& month < right.month) ||
        (year ==right.year && month == right.month && day }
void Date::showdate()
{
cout << \"The date is \";
cout << setfill('0')
     << setw(2) << day<< '/'
     << setw(2) << month<< '/'
     << setw(2) << year %100
     << endl;
return;
}
#endif /* DATE_H_ */