Month.cpp

//imported class
#include "Month.h"
//preprocessor directives
#include <string>
#include <iostream>


using namespace std;

//default constructor initializing month name and number
Month::Month() {
	name = "January";
	monthNumber = 1;
}

//constructor that takes one string parameter and sets name and month number accordingly
Month::Month(string n) {
	setMonthName(n);
}

//constructor that takes one int parameter and sets name and month number accordingly
Month::Month(int num) {
	setMonthNumber(num);
}

//setter method for the month name, also sets corresponding number
void Month::setMonthName(string n) {
	name = n;
	for (int i{ 0 }; i < 12; i++) {
		if (name == months[i]) {
			monthNumber = i + 1;
		}
	}
}

//setter method for the month number, also sets corresponding month name
void Month::setMonthNumber(int num) {
	monthNumber = num;
	name = months[monthNumber - 1];
}

//getter method for the month name
string Month::getMonthName() const {
	return name;
}

//getter method for the month number
int Month::getMonthNumber() const {
	return monthNumber;
}

//overloaded prefix ++ operator
//increments month number, and name accordingly
//returns current state of obejct
Month Month::operator++() {
	++monthNumber;
	name = months[monthNumber - 1];
	if (monthNumber == 12) {
		name = "January";
		monthNumber = 1;
	}
	return *this;
}

//overloaded postfix ++ operator
//increments month number, and name accordingly
//dummy parameter is used, and temporary instance of class is declared before incrementation actually takes place
Month Month::operator++(int) {
	Month m(monthNumber);
	monthNumber++;
	name = months[monthNumber - 1];
	if (monthNumber == 12) {
		name = "January";
		monthNumber = 1;
	}
	return m;
}

//overloaded assignment operator from right to left
//returns current state of object 
const Month Month::operator=(const Month &right) {
	name = right.name;
	monthNumber = right.monthNumber;
	return *this;
}

//overloaded stream extraction operator
//displays the following sentence when called
ostream& operator<< (ostream& strm, const Month & obj)
{
	strm << "The name is " << obj.getMonthName() << " and the number is " << obj.getMonthNumber() << "." << endl;
	return strm;
}

//overloaded stream insertion operator
//stores month name in memory and sets corresponding month name using setter method for the month name
istream& operator>>(istream& strm,  Month & obj)
{
	string n;
	strm >> n;
	while (strm.fail()) {
		strm.clear();
		strm.ignore(32767, '\n');
		cout << "Invalid entry. Try again:";
		strm >> n;
	}
	obj.setMonthName(n);
	return strm;
}