Date.h
#ifndef DATE_H
#define DATE_H
#include <string>
class Date
{
private:
int month;
int day;
int year;
public:
// Exception class
class InvalidDay
{
private:
int invalidDay;
public:
InvalidDay(int dayVal)
{ invalidDay = dayVal; }
int getInvalidDay() const
{ return invalidDay; }
};
// Exception class
class InvalidMonth
{
private:
int invalidMonth;
public:
InvalidMonth(int monthVal)
{ invalidMonth = monthVal; }
int getInvalidMonth() const
{ return invalidMonth; }
};
Date();
// Mutator functions
void setYear(int);
bool isLeapYear();
void setMonth(int);
void setDay(int);
// Accessor functions
void getFormatOne() const;
void getFormatTwo() const;
void getFormatThree() const;
};
#endif
Date.cpp
#include "Date.h"
#include <array>
using std::array;
#include <iostream>
using std::cout;
#include <iostream>
using std::string;
// Initializes the daysPerMonth array with the days per month
const array<int, 13> daysPerMonth { 0, 31, 28, 31, 30, 31, 30,
31, 31, 30, 31, 30, 31 };
// Initializes the monthNames array with the names of the months of the year
const array<string, 13> monthNames { "", "JANUARY", "FEBRUARY", "MARCH", "APRIL", "MAY", "JUNE",
"JULY", "AUGUST", "SEPTEMBER", "OCTOBER", "NOVEMBER", "DECEMBER" };
enum Months { JANUARY = 1, FEBRUARY, MARCH, APRIL, MAY, JUNE,
JULY, AUGUST, SEPTEMBER, OCTOBER, NOVEMBER, DECEMBER };
/* **********************************************************
Date::Date() - Constructor
********************************************************** */
Date::Date()
{
year = 1900;
month = JANUARY;
day = 1;
}
/* **********************************************************
Date::setYear() : int
This functions sets the value of the year member variable.
If it is invalid, the year member variable is assigned the
value 1900.
********************************************************** */
void Date::setYear(int yyyy)
{
if (yyyy >= 0 && yyyy <= 2200)
{
year = yyyy;
}
else
{
year = 1900;
}
}
/* **********************************************************
Date::setMonth() : int mm
This function sets the value of the member variable month.
InvalidMonth is thrown when an invalid value is passed.
********************************************************** */
void Date::setMonth(int mm)
{
if (mm >= JANUARY && mm <= DECEMBER)
{
month = mm;
}
else
{
throw InvalidMonth(mm);
}
}
/* **********************************************************
Date::setDay() : int
This function sets the value of the member variable day.
InvalidDay is thrown if an invalid value is passed.
********************************************************** */
void Date::setDay(int dd)
{
if (month == FEBRUARY && isLeapYear() && dd == 29)
{
day = dd;
}
else if (dd < 1 || dd > daysPerMonth[month])
{
throw InvalidDay(dd);
}
else
{
day = dd;
}
}
/* **********************************************************
Date::isLeapYear (void)
This function determines whether a year is a leap year. If
it is true is returned, else false is returned.
********************************************************** */
bool Date::isLeapYear()
{
if (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0))
{
return true;
}
return false;
}
/* **********************************************************
Date::displayFormatOne (void)
This function formats the date as 12/12/2012 and returns
it.
********************************************************** */
void Date::getFormatOne() const
{
cout << "\nSlash Style:\n";
cout << month << "/" << day << "/" << year << "\n";
}
/* **********************************************************
Date::displayFormatTwo (void)
This function formats the date as DECEMBER 12, 2012 and
returns it.
********************************************************** */
void Date::getFormatTwo() const
{
cout << "\nU.S. Style:\n";
cout << monthNames[month] << " " << day << ", " << year << "\n";
}
/* **********************************************************
Date::displayFormatThree (void)
This function formats the date as 12 DECEMBER, 2012 and
returns it.
********************************************************** */
void Date::getFormatThree() const
{
cout << "\nEuropean Style:\n";
cout << day << " " << monthNames[month] << " " << year << "\n\n";
}
DateDm.cpp
#include "Date.h"
#include <iostream>
using std::cin;
using std::cout;
int main()
{
int month = 0;
int day = 0;
int year = 0;
bool tryAgain = true;
Date dateObj;
cout << "DATE EXCEPTION DEMO\n\n"
<< "This program lets you enter a date. If it is a valid date,\n"
<< "it is displayed in three formats.\n\n";
cout << "Please enter a year, a month, and a day (Ex: 2008 02 29): ";
cin >> year >> month >> day;
dateObj.setYear(year);
while (tryAgain)
{
try
{
dateObj.setMonth(month);
dateObj.setDay(day);
cout << "\nThis is your date in three different formats:\n";
dateObj.getFormatOne();
dateObj.getFormatTwo();
dateObj.getFormatThree();
tryAgain = false;
}
catch (Date::InvalidDay dayVal)
{
cout << "\nError: Day " << dayVal.getInvalidDay() << " is invalid.\n";
cout << "Please enter a valid day: ";
cin >> day;
}
catch (Date::InvalidMonth monthVal)
{
cout << "\nError: Month " << monthVal.getInvalidMonth() << " does not exist.\n";
cout << "Please enter a valid month: ";
cin >> month;
}
}
cout << "Thank you for trying the Date Exception Demo! Have a nice day!";
cin.ignore();
cin.get();
return 0;
}
Example Output:
No comments:
Post a Comment