Question

In this assignment will demonstrate your understanding of the following:

1. C++ classes;

2. Implementing a class in C++;

3. Operator overloading with chaining;

4. Preprocessor directives #ifndef, #define, and #endif;

5. this – the pointer to the current object.

In this assignment you will implement the Date class and test its functionality.

Consider the following class declaration for the class date:

class Date

{

public:

Date(); //default constructor; sets m=01, d=01, y =0001

Date(unsigned m, unsigned d, unsigned y);

//explicit-value constructor to set date equal to today's

//date. Use 2-digits for month (m) and day (d), and 4-digits for year (y); this function should //print a message if a leap year.

void display();//output Date object to the screen

int getMonth();//accessor to output the month

int getDay();//accessor to output the day

int getYear();//accessor to output the year

void setMonth(unsigned m);//mutator to change the month

void setDay(unsigned d);//mutator to change the day

void setYear(unsigned y);//mutation to change the year

friend ostream & operator<<(ostream & out, const Date & dateObj);//overloaded operator<< as a friend function with chaining

//you make add other functions if necessary

private:

int myMonth, myDay, myYear; //month, day, and year of a Date obj respectively };

You will implement all the constructors and member functions in the class Date. Please see the comments that follow each function prototype in the Date class declaration above; these comments describe the functionality that the function should provide to the class.

Please store the class declaration in the file “date.h” and the class implementation in the file “date.cpp” , and the driver to test the functionality of your class in the file “date_driver.cpp”.

S A M P L E O U T P U T FORAssignment#2

Below I have provided a skeleton with stubs and a driver to help you get started. Remember to separate the skeleton into the appropriate files, and to include the appropriate libraries.

You should submit the files “date.h” , “date.cpp” , and “date_driver.cpp” together in a zip file named with the format “lastname_firstname_date.zip” to Canvas before the due date and time. Usually the tool you use to create a zip file will automatically append “zip” to the end of the filename.

Notes:

1. ALL PROGRAMS SHOULD BE COMPILED USING MS VISUAL STUDIO C++!

2. Information on Month: 1 = January, 2 = February, 3= March, …, 12 = December

3. Test the functionality of your class in “date_driver.cpp” in the following order and include messages for each test:

a. Test default constructor

b. Test display

c. Test getMonth

d. Test getDay

e. Test getYear

f. Test setMonth

g. Test setDay

h. Test setYear

4. See sample output below.

5. See skeleton below.

S A M P L E O U T P U T FORAssignment#2

Default constructor has been called

01/01/0001

Explicit-value constructor has been called

12/31/1957

Explicit-value constructor has been called

Month = 15 is incorrect

Explicit-value constructor has been called

2/29/1956

This is a leap year

Explicit-value constructor has been called

Day = 30 is incorrect

Explicit-value constructor has been called

Year = 0000 is incorrect

Explicit-value constructor has been called

Month = 80 is incorrect

Day = 40 is incorrect

Year = 0000 is incorrect

12/31/1957

12

31

1957

myDate: 11/12/2015 test2Date: 02/29/1956 yourDate: 12/31/1957

Skeleton FOR Assignment#2

#include <iostream>

#include <iostring>

//#include "date.h"

using namespace std;

//*********************************************************************************************

//*********************************************************************************************

// D A T E . h

//This declaration should go in date.h

#ifndef DATE_H

#define DATE_H

class Date

{

public: Date(); //default constructor; sets m=01, d=01, y =0001 Date(unsigned m, unsigned d, unsigned y);

//explicit-value constructor to set date equal to today's

//date. Use 2-digits for month (m) and day (d), and 4-digits for year (y); this function should

//print a message if a leap year.

void display();//output Date object to the screen

int getMonth();//accessor to output the month

int getDay();//accessor to output the day

int getYear();//accessor to output the year

void setMonth(unsigned m);//mutator to change the month

void setDay(unsigned d);//mutator to change the day

void setYear(unsigned y);//mutation to change the year

friend ostream & operator<<(ostream & out, const Date & dateObj);//overloaded operator<< as a friend function with chaining

//you make add other functions if necessary

private:

int myMonth, myDay, myYear; //month, day, and year of a Date obj respectively };

#endif

//*********************************************************************************************

//*********************************************************************************************

// D A T E . C P P

//This stub (for now) should be implemented in date.cpp

//*************************************************************************************

//Name: Date

//Precondition: The state of the object (private data) has not been initialized

//Postcondition: The state has been initialized to today's date

//Description: This is the default constructor which will be called automatically when

//an object is declared. It will initialize the state of the class

//

//*************************************************************************************

Date::Date()

{

//the code for the default constructor goes here

}

//*************************************************************************************

//Name: Date

//Precondition:

//Postcondition:

//Description:

//

//

//*************************************************************************************

Date::Date(unsigned m, unsigned d, unsigned y)

{

}

//*************************************************************************************

//Name: Display

//Precondition:

//Postcondition:

//Description:

//

//

//*************************************************************************************

void Date::display()

{

}

//*************************************************************************************

//Name: getMonth

//Precondition:

//Postcondition:

//Description:

//

//

//*************************************************************************************

int Date::getMonth()

{

return 1;

}

//*************************************************************************************

//Name: getDay

//Precondition:

//Postcondition:

//Description:

//

//

//*************************************************************************************

int Date::getDay()

{

return 1;

}

//*************************************************************************************

//Name: getYear

//Precondition:

//Postcondition:

//Description:

//

//

//*************************************************************************************

int Date::getYear()

{

return 1;

}

//*************************************************************************************

//Name: setMonth

//Precondition:

//Postcondition:

//Description:

//

//

//*************************************************************************************

void Date::setMonth(unsigned m)

{

}

//*************************************************************************************

//Name: setDay

//Precondition:

//Postcondition:

//Description:

//

//

//*************************************************************************************

void Date::setDay(unsigned d)

{

}

//*************************************************************************************

//Name: getYear

//Precondition:

//Postcondition:

//Description:

//

//

//*************************************************************************************

void Date::setYear(unsigned y)

{

}

ostream & operator<<(ostream & out, const Date & dateObj)

{

return out;

}

//*********************************************************************************************

//*********************************************************************************************

// D A T E D R I V E R . C P P

//EXAMPLE OF PROGRAM HEADER

int main()

{

//Date myDate;

//Date yourDate(12,31, 1957);

//Date test1Date(15, 1, 1962);

//should generate error message that bad month

//Date test2Date(2, 29, 1956);

//ok, should say leep year

//Date test3Date(2, 30, 1956);

//should generate error message that bad day

//Date test4Date(12,31,0000);

//should generate error message that bad year

//Date test5Date(80,40,0000);

//should generate error message that bad month, day and year

//yourDate.display();

//cout<<yourDate.getMonth()<<endl;

//cout<<yourDate.getDay()<<endl;

//myDate.setMonth(11);

//myDate.setDay(12);

//myDate.setYear(2015);

//cout<<"myDate: "<<myDate<<" test2Date: "<<test2Date<<" yourDate: "<<yourDate<<endl;

return 0;

}

Answer 1

If you have any doubts, please give me comment...

date.h

// D A T E . h

//This declaration should go in date.h

#ifndef DATE_H

#define DATE_H

#include <iostream>

#include <iomanip>

using namespace std;

class Date

{

public:

    Date(); //default constructor; sets m=01, d=01, y =0001

    Date(unsigned m, unsigned d, unsigned y);

    //explicit-value constructor to set date equal to today's

    //date. Use 2-digits for month (m) and day (d), and 4-digits for year (y); this function should

    //print a message if a leap year.

    void display();                                                //output Date object to the screen

    int getMonth();                                                //accessor to output the month

    int getDay();                                                  //accessor to output the day

    int getYear();                                                 //accessor to output the year

    void setMonth(unsigned m);                                     //mutator to change the month

    void setDay(unsigned d);                                       //mutator to change the day

    void setYear(unsigned y);                                      //mutation to change the year

    friend ostream &operator<<(ostream &out, const Date &dateObj); //overloaded operator<< as a friend function with chaining

    //you make add other functions if necessary

private:

    int myMonth, myDay, myYear; //month, day, and year of a Date obj respectively

};

#endif

date.cpp

// D A T E . C P P

//This stub (for now) should be implemented in date.cpp

//*************************************************************************************

//Name: Date

//Precondition: The state of the object (private data) has not been initialized

//Postcondition: The state has been initialized to today's date

//Description: This is the default constructor which will be called automatically when

//an object is declared. It will initialize the state of the class

//

//*************************************************************************************

#include "date.h"

Date::Date()

{

    //the code for the default constructor goes here

    cout << "Default constructor has been called" << endl;

    myMonth = 01;

    myDay = 01;

    myYear = 0001;

    display();

}

//*************************************************************************************

//Name: Date

//Precondition:

//Postcondition:

//Description:

//

//

//*************************************************************************************

Date::Date(unsigned m, unsigned d, unsigned y)

{

    cout << "Explicit-value constructor has been called" << endl;

    //setting month

    if (m < 1 || m > 12)

        cout << "Month = " << m << " is incorrect" << endl;

    else

    {

        myMonth = m;

        if (y < 1)

            cout << "Year = " << setw(4) << setfill('0') << y << " is incorrect" << endl;

        else

        {

            myYear = y;

            if ((myMonth == 4 || myMonth == 6 || myMonth == 9 || myMonth == 11) && d > 0 && d <= 30)

            {

                myDay = d;

                display();

            }

            else if (myMonth == 2 )

            {

                if((((myYear % 4 == 0) && (myYear % 100 != 0)) || (myYear % 400 == 0))){

                    if(d<=29){

                        myDay = d;

                        display();

                    }

                    else

                        cout<<"This is a leap year"<<endl;

                }

                else if(d<=28){

                    myDay = d;

                    display();

                }

                else

                    cout << "Day = " << d << " is incorrect" << endl;

            }

            else if (myMonth!=2 && d <= 31)

            {

                myDay = d;

                display();

            }

            else

                cout << "Day = " << d << " is incorrect" << endl;

        }

    }

}

//*************************************************************************************

//Name: Display

//Precondition:

//Postcondition:

//Description:

//

//

//*************************************************************************************

void Date::display()

{

    cout << setfill('0');

    cout << setw(2) << myMonth << "/" << setw(2) << myDay << "/" << setw(4) << myYear << endl;

}

//*************************************************************************************

//Name: getMonth

//Precondition:

//Postcondition:

//Description:

//

//

//*************************************************************************************

int Date::getMonth()

{

    return myMonth;

}

//*************************************************************************************

//Name: getDay

//Precondition:

//Postcondition:

//Description:

//

//

//*************************************************************************************

int Date::getDay()

{

    return myDay;

}

//*************************************************************************************

//Name: getYear

//Precondition:

//Postcondition:

//Description:

//

//

//*************************************************************************************

int Date::getYear()

{

    return myYear;

}

//*************************************************************************************

//Name: setMonth

//Precondition:

//Postcondition:

//Description:

//

//

//*************************************************************************************

void Date::setMonth(unsigned m)

{

    if (m < 1 || m > 12)

        cout << "Month = " << m << " is incorrect" << endl;

    else

        myMonth = m;

}

//*************************************************************************************

//Name: setDay

//Precondition:

//Postcondition:

//Description:

//

//

//*************************************************************************************

void Date::setDay(unsigned d)

{

    if ((myMonth == 4 || myMonth == 6 || myMonth == 9 || myMonth == 11) && d > 0 && d <= 30)

        myDay = d;

    else if (myMonth == 2 && (d <= 28 || ((((myYear % 4 == 0) && (myYear % 100 != 0)) || (myYear % 400 == 0)) && d <= 29)))

    {

        myDay = d;

    }

    else if (d <= 31)

        myDay = d;

    else

        cout << "Day = " << d << " is incorrect" << endl;

}

//*************************************************************************************

//Name: getYear

//Precondition:

//Postcondition:

//Description:

//

//

//*************************************************************************************

void Date::setYear(unsigned y)

{

    if (y > 0)

        myYear = y;

    else

        cout << "Year = " << setw(4) << setfill('0') << y << " is incorrect" << endl;

}

ostream &operator<<(ostream &out, const Date &dateObj)

{

    out << setfill('0');

    out << setw(2) << dateObj.myMonth << "/" << setw(2) << dateObj.myDay << "/" << setw(4) << dateObj.myYear;

    return out;

}

date_driver.cpp

// D A T E D R I V E R . C P P

//EXAMPLE OF PROGRAM HEADER

#include<iostream>

#include "date.h"

int main()

{

    Date myDate;

    Date yourDate(12, 31, 1957);

    Date test1Date(15, 1, 1962);

    // should generate error message that bad month

    Date test2Date(2, 29, 1956);

    //ok, should say leep year

    Date test3Date(2, 30, 1956);

    //should generate error message that bad day

    Date test4Date(12, 31, 0000);

    //should generate error message that bad year

    Date test5Date(80, 40, 0000);

    //should generate error message that bad month, day and year

    yourDate.display();

    cout << yourDate.getMonth() << endl;

    cout << yourDate.getDay() << endl;

    myDate.setMonth(11);

    myDate.setDay(12);

    myDate.setYear(2015);

    cout << "myDate: " << myDate << " test2Date: " << test2Date << " yourDate: " << yourDate << endl;

    return 0;

}