Task 7.1: From the following 3 codes "Date.h", "dateApp.cpp" and "date_in.txt" . read the class definition and answer the following questions:

How many operators the class has overloaded and what are they?

How to read a date from a file and write a date into a file?

Add a few more dates in the "date_in.txt" file and change the code of dateApp.cpp so that all the dates in the text file can be read and output.

** CODE MUST BE IN C++

************************** date.h below:

#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_ */

************* end of date.h

*************dateApp.cpp

#include #include #include #include #include

#include "Date.h"

using namespace std;

int main() { //Test 1 Date d1(1, 4, 2012), d2(3, 4, 2012); if (d1 < d2) cout << " yes" << endl; else cout << "no" << endl;

//Test 2 ifstream fin; ofstream fout;

//Read a date from the file fin.open("date_in.txt"); if (fin.fail()) { cout << "Input file opening failed. "; exit(1); }

fout.open("date_out.txt"); if (fout.fail()) { cout << "Output file opening failed. "; exit(1); }

char deliminator; int day = 0; int month = 0; int year = 0;

fin >> day; fin.get(deliminator); fin >> month; fin.get(deliminator); fin >> year; fin.get(deliminator);

Date d(day, month, year); cout << d << endl; //output the date to a file fout << d << endl;

return 0; }

************** end of dateApp.cpp

************** date_in.txt

10/11/2020

************** end of date_in.txt