Date class  to use: #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 leap year? 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, return false 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 < right.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_ */ Task 7.2 Write a program that randomly generates 100 dates and store them into a vector. Use the Date class provided in Task 7 .1. The dates generated must be within 1000 days after 1/1/2000.