CPT106 C++ Programming and Software Engineering II Individual Project Fundamental of class and obj

CPT106 C++ Programming and Software Engineering II

Individual Project

Fundamental of class and object

Write a C++ program that can perform the following:

1. Create a class MyDate to represent a date like follows:
   25-JAN-2016
   The class contains three data members, denoting the year, the 3-letter abbreviation of the month
   (Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec) and the date (Note that it is
   assumed that, for this assignment, Feb. has 28 days.).
   a. Define constructors and destructors of this class
   b. Define members to return the date, year, month and day, respectively.
   c. Using “operator overloading” to realise the following tasks:

1. Define the assignment operator “=” to assign the value of one Date object to the
   other.
2. Define the comparator “>” “<” and “==” to compare two dates.
3. Define the unary sign “++” to add one day to a date object.
4. Define the subtractor “-” to subtract days from a date object and return a new date
   object.

2. Create a new subclass SubDate, which inherits from the class MyDate and represents a new
   date like follows:
   25-JAN-2016 16:23:18
   a. Define new data members of the subclass to represent the hour, minute and second.
   b. Define constructors of the subclass.
   c. Define members to return the date (day-month-year HH:mm:ss), time (HH:mm:ss),
   hour, minute and second, respectively.
   d. Define the subtractor “-” in the sub class to return the number of days between a
   SubDate object and a MyDate object.
   For example:
   SubDate d1(2016, JAN, 25, 18, 23,50), d2(2016, JAN,18); /two MyDate objects/
   int days=d1-d2; /days=7/
3. In the main function, you should test these two classes following the requirements below:
   Requirements:
   a. Create objects of these two classes in your main function.
   b. The value of objects should be inputted from the keyboard,
   c. Test all the function members of the two classes in the main function, and print out the
   results of these function members

#include "SubDate.cpp"
#include <iostream>
using namespace std;
// a.Create objects of these two classes in your main function.
// b.The value of objects should be inputted from the keyboard,
// c.Test all the function members of the two classes in the main function, and print out the
// results of these function members.
int main() {
	int year, day, hour, minute, second;
	string month;
	cout << "MyDate \n" <<"year: " << endl;
	cin >> year;
	cout << "month: " << endl;
	cin >> month;
	cout << "day: " << endl;
	cin >> day;
	cin.get();
	MyDate md = MyDate(year, month, day);

	cout << "test MyDate" << endl;

	cout << "test1: int get_day()" << endl;
	cout << md.get_day() << endl;

	cout << "test2: string get_month()" << endl;
	cout << md.get_month() << endl;

	cout << "test3: int get_year()" << endl;
	cout << md.get_year() << endl;

	cout << "test4: MyDate& operator=(const MyDate & d)" << endl;
	MyDate md2 = MyDate();
	md2 = md;
	cout << md2.get_day() << " - ";
	cout << md2.get_month() << " - ";
	cout << md2.get_year() << endl;

	cout << "test5: bool operator>(const MyDate & d)" << endl;
	cout << (md > md2) << endl;

	cout << "test6: bool operator<(const MyDate & d)" << endl;
	cout << (md < md2) << endl;

	cout << "test7: bool operator==(const MyDate & d)" << endl;
	cout << (md == md2) << endl;

	cout << "test8: MyDate operator++(int) md2++;" << endl;
	cout << md2.get_day() << " - ";
	cout << md2.get_month() << " - ";
	cout << md2.get_year() << endl;
	md2++;
	cout << md2.get_day() << " - ";
	cout << md2.get_month() << " - ";
	cout << md2.get_year() << endl;

	cout << "test9: MyDate operator-(int day) md2 = md2 - 100;" << endl;
	cout << md2.get_day() << " - ";
	cout << md2.get_month() << " - ";
	cout << md2.get_year() << endl;
	md2 = md2 - 100;
	cout << md2.get_day() << " - ";
	cout << md2.get_month() << " - ";
	cout << md2.get_year() << endl;
	

	cout << "SubDate\n " << "year: " << endl;
	cin >> year;
	cout << "month: " << endl;
	cin >> month;
	cout << "day: " << endl;
	cin >> day;
	cout << "hour: " << endl;
	cin >> hour;
	cout << "minute: " << endl;
	cin >> minute;
	cout << "second: " << endl;
	cin >> second;
	SubDate sd = SubDate(year, month, day, hour, minute, second);

	cout << "test SubDate" << endl;
	cout << "test1: void get_date()" << endl;
	sd.get_date();

	cout << "test2: void get_time()" << endl;
	sd.get_time();

	cout << "test3: int get_hour()" << endl;
	cout << sd.get_hour() << endl;

	cout << "test4: int get_minute()" << endl;
	cout << sd.get_minute() << endl;

	cout << "test5: int get_second()" << endl;
	cout << sd.get_second() << endl;

	cout << "test6: int operator-(MyDate d)" << endl;
	cout << "SubDate: ";
	sd.get_date();
	cout << "MyDate: ";
	cout << md.get_day() << " - ";
	cout << md.get_month() << " - ";
	cout << md.get_year() << endl;
	cout << " = " << (sd - md) << endl;

	return 0;
}

MyDate.cpp

// 1. Create a class MyDate to represent a date like follows :
// 25 - JAN - 2016

#include <string>
using namespace std;

class MyDate {
private:
	int year;
	string month;
	int mon;
	int day;

public:
	// constructors and destructors
	MyDate(int year, string month, int day)
	{
		this->year = year;
		this->month = month;
		this->day = day;
		string m[12] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul",
			"Aug", "Sep", "Oct", "Nov", "Dec" };
		for (int i = 0; i < 12; i++) {
			if (m[i] == month) {
				this->mon = i + 1;
			}
		}
	};
	MyDate()
	{
		this->year = 0;
		this->month = "No";
		this->mon = 0;
		this->day = 0;
	};
	~MyDate() {};

	// members
	int get_day() {
		return this->day;
	};
	string get_month() {
		return this->month;
	};
	int get_year() {
		return this->year;
	};

	// operator overloading
	
	//  1) assign the value of one Date object to the other.
	MyDate& operator=(const MyDate& d) {
		if (this != &d)
		{
			this->year = d.year;
			this->month = d.month;
			this->mon = d.mon;
			this->day = d.day;
		}
		return *this;
	};

	//  2) Define the comparator “ > ” “ < ” and “ == ” to compare two dates.
	bool operator>(const MyDate& d) {
		// compare from year to month
		if (this->year > d.year)
		{
			return true;
		}
		else if ((this->year == d.year) && (this->mon > d.mon))
		{
			return true;
		}
		else if ((this->year == d.year) && (this->mon == d.mon) && (this->day > d.day))
		{
			return true;
		}
		else
		{
			return false;
		}
	};
	bool operator<(const MyDate& d) {
		// if not > and == is <
		return !((*this > d) || (*this == d));
	};
	bool operator==(const MyDate& d) {
		return (this->year == d.year && this->month == d.month && this->day == d.day);
	};

	//	3) Define the unary sign “++” to add one day to a date object.
	MyDate operator++(int) {
		string m[12] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul",
			"Aug", "Sep", "Oct", "Nov", "Dec" };
		int days[13] = { 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };

		this->day++;
		while (this->day > days[this->mon])
		{
			this->day -= days[this->mon];
			this->mon++;
			if (this->mon == 13)
			{
				this->year++;
				this->mon = 1;
			}
		}
		this->month = m[this->mon - 1];
		return *this;
	};

	//	4) Define the subtractor “ - ” to subtract days from a date object and return a new date object.
	MyDate operator-(int day) {
		string m[12] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul",
			"Aug", "Sep", "Oct", "Nov", "Dec" };
		int days[13] = { 0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }; // number of days in month
		MyDate tmp = *this; // change on tmp
		if (day < 0)
		{
			tmp.day -= day;
			while (tmp.day > days[tmp.mon])
			{
				tmp.day -= days[tmp.mon];
				tmp.mon++;
				if (tmp.mon == 13)
				{
					tmp.year++;
					tmp.mon = 1;
				}
			}
			tmp.month = m[tmp.mon - 1];
			return tmp;
		}

		tmp.day -= day;
		while (tmp.day <= 0)
		{
			tmp.mon--;
			if (tmp.mon == 0)
			{
				tmp.year--;
				tmp.mon = 12;
			}
			tmp.day += days[tmp.mon];
		}
		tmp.month = m[tmp.mon - 1];
		return tmp;

	};
};

SubDate.cpp

// 2. Create a new subclass SubDate, which inherits from the class MyDate and represents a new
// date like follows : 25 - JAN - 2016 16 : 23 : 18
// a.Define new data members of the subclass to represent the hour, minute and second.
// b.Define constructors of the subclass.
// c.Define members to return the date(day - month - year HH : mm:ss), time(HH : mm : ss),
// hour, minute and second, respectively.
// d.Define the subtractor "-" in the sub class to return the number of days between a
// SubDate object and a MyDate object.
// For example :
// SubDate d1(2016, JAN, 25, 18, 23, 50), d2(2016, JAN, 18); /*two MyDate objects*/
// int days = d1 - d2; /*days=7*/
#include "MyDate.cpp"

class SubDate : public MyDate {
private:
	int hour;
	int minute;
	int second;
public:
	SubDate(int hour, int minute, int second) {
		this->hour = hour;
		this->minute = minute;
		this->second = second;
	};
	SubDate(int year, string month, int day, int hour, int minute, int second)
		:MyDate(year, month, day), hour(hour), minute(minute), second(second)
	{};
	~SubDate() {
	};
	void get_date() {
		printf("%02d - %s - %04d %02d : %02d : %02d\n", get_day(), get_month().c_str(), get_year(), hour, minute, second);
	};
	void get_time() {
		printf("%02d : %02d : %02d\n", hour, minute, second);
	};
	int get_hour() {
		return this->hour;
	};
	int get_minute() {
		return this->minute;
	};
	int get_second() {
		return this->second;
	};
	// return the number of days between a SubDate object and a MyDate object.
	int operator-(MyDate d) {

		int count = 0;
		if (*this > d)
		{
			while (!(*this == d)) // add d until tmp == d
			{
				d++;
				count++;
			}
		}
		else
		{
			while (!(*this == d)) // sub d until tmp == d
			{
				d = d - 1;
				count--;
			}
		}
		return count;
	}; 
};