C++ Project Modify the Date Class: Standards Your program must start with comments giving your name...
C++ Project Modify the Date Class:
Standards
Your program must start with comments giving your name and the name of the assignment.
Your program must use good variable names.
All input must have a good prompt so that the user knows what to enter.
All output must clearly describe what is output.
Using the date class, make the following modifications:
Make the thanksgiving function you wrote for project 1 into a method of the Date class. It receive the current year and returns the date for Thanksgiving.
In the Date class there are only a few overloaded operators for comparison. Add all of the following: <=, >=, and !=
Add a method to return the season as an integer: 0=winter, 1=spring, 2=summer and 3=fall for the northern hemisphere.
Your main program should illustrate the use of each method.
You may use March 20th for the first day of Spring. Use June
20th for the first day of summer, September 22 for the first day of
fall, and December 21 as the first day of winter. You will find the
overloaded operators handy for this.
A nice solution for this is to use an array to store the first date
for each season, then loop to see where a date falls.
Main.cpp
#include "Date.h"
#include <iostream>
using namespace std;
// Start of main
void bubbleSort(Date date[], int n)//is an array of dates and is the size of the array
{
int i, j;
for (i = 0; i < n - 1; i++)
// Last i elements are already in place
for (j = 0; j < n - i - 1; j++)
if (date[j] > date[j + 1])
{
Date temp = date[j];
date[j] = date[j + 1];
date[j + 1] = temp;
}
}
int main() {
// Declare arrays and variables
const int SIZE = 7; // Size of array elements
const int COUNT = 6; // Number of holidays
Date weekDays[SIZE]; // Weekday array
Date holidays[COUNT]; // Holiday array
string holidaysDescription[COUNT];
int year = 0;
Date easterSunday(04, 01, 2018); // Easter Sunday
holidays[0] = easterSunday;
holidaysDescription[0] = "Easter Sunday";
Date mothersDay(05, 13, 2018); // Mother's Day
holidays[1] = mothersDay;
holidaysDescription[1] = "Mother's Day";
Date memorialDay(05, 28, 2018); // Memorial Day
holidays[2] = memorialDay;
holidaysDescription[2] = "Memorial Day";
Date fathersDay(06, 17, 2018); // Fathers Day
holidays[3] = fathersDay;
holidaysDescription[3] = "Father's Day";
Date independenceDay(07, 04, 2018); // Independence Day
holidays[4] = independenceDay;
holidaysDescription[4] = "Independence Day";
// Prompt the user for current year
cout << "Please enter the current year: ";
cin >> year;// Read in year
cout << "\n";
// Search for the date of Thanksgiving and add it to
// the holiday array
Date giveThanks = giveThanks.thanksGiving(year);
holidays[5] = giveThanks;
holidaysDescription[5] = "Thanksgiving";
bubbleSort(holidays, COUNT);//Sort the list of the array
cout << "The holidays are sorted by date: \n";
for (int index = 0; index < COUNT; index++)
{
// Display the holiday
int day = holidays[index].weekday();
cout << holidaysDescription[index] << " is on " << holidays[index] << " which falls on a ";
// Display the day
switch (day) {
case 0: cout << "Sunday" << endl; break;
case 1: cout << "Monday" << endl; break;
case 2: cout << "Tuesday" << endl; break;
case 3: cout << "Wednesday" << endl; break;
case 4: cout << "Thursday" << endl; break;
case 5: cout << "Friday" << endl; break;
case 6: cout << "Saturday" << endl; break;
}
}
system("pause");
return 0;
}
Thanksgiving equation:
Date Date::thanksGiving(int year)
{
Date turkeyDay(11, 01, year);
while (turkeyDay.weekday() != 4)
{
turkeyDay = turkeyDay + 1;
}
turkeyDay = turkeyDay + 21;
return turkeyDay;
}
Homework Answers
//Date.h
#ifndef Date_H
#define Date_H
#include <iostream>
#include <sstream>
#include <ctime>
#include <string>
using namespace std;
class Date {
private:
int month, day, year;
int days[13];
public:
//constructors
Date(); //constructor for todays date
Date(int m, int d, int y); //constructor to assign date
Date(string str); //constructor for todays date as
"mm/dd/year
Date(int gregorian); //constructor to convert a Gregorian date to
Date
//methods
int getMonth() const; //returns the private variable month
int getDay() const; //returns the private variable day
int getYear() const; //returns the private variable year
string toString() const; //returns the string mm/dd/yyyy
bool leapYear() const; //determines if the year is a leap
year
int dayofYear() const; //returns the day of the year: ie 2/1/????
is the 32 day of year
int julian() const;
int weekday() const; //returns 0 for Sunday, 1 for Monday, etc.
//overloaded operators
bool operator==(const Date& otherDate); //2 dates are equal if
month, day and year are equal
bool operator<(const Date& otherDate); //a date is <
another date if it is earlier
bool operator>(const Date& otherDate); //a date is >
another date if it is later
bool operator>=(const Date& otherDate); //a date is >
another date if it is later
bool operator<=(const Date& otherDate); //a date is >
another date if it is later
bool operator!=(const Date& otherDate); //a date is >
another date if it is later
Date operator=(const Date& otherDate); //let's you copy one
date to another.
Date operator+(int); //Assign new values to the date after adding
the number of days
friend ostream& operator << (ostream &output, const
Date &d);
friend istream& operator >> (istream &input, Date
&d);
Date thanksGiving();
int season();
};
bool validDate(int m, int d, int y); //test other date
bool leapYear(int y); //let's you test any year, not just the year
for the instance
int julian(int m, int d, int y); //convert any date to Julian
void gregorian(int jd, int &mth, int &d, int &y);
static int days2[]={0,31,28,31,30,31,30,31,31,30,31,30,31};
#endif
//******************************************************************
//Date.cpp
#include "Date.h"
#include <ctime>
Date::Date() {
//constructor to assign todays date to date
char data[9]; //holder for the date
_strdate(data); //gets the current date mm/dd/yy
string date(data); //copy to a string for parsing
if(date[0]=='0')
month = stoi(date.substr(1,1));
else
month = stoi(date.substr(0,2));
//gets characters 0 and 1 of date and converts to int
if(date[3]=='0')
day = stoi(date.substr(4,1));
else
day = stoi(date.substr(3,2));
//day=stoi(date.substr(3,2)); //gets characters 3 and 4 of date and
converts to int
year=stoi(date.substr(6,2))+2000; //gets characters 6 and 7 of date and converts to int
if(leapYear()) days2[2]=29; else days2[2]=28;
for(int m=0;m<13;m++) days[m]=days2[m];
}//constructor for today
bool validDate(int m, int d, int y) {
bool valid=true; //assume it is valid until found to be invalid
if(y<1000) valid=false;
if(m<1 || m>12) valid=false;
if(leapYear(y)) days2[2]=29; else days2[2]=28;
if(d<1 || d>days2[m]) valid=false;
return valid;
}//validDate
Date::Date(int m, int d, int y) {
//constructor to assign values to month day and year
if(validDate(m,d,y)) {
month=m;
day=d;
year=y;
}
else {
month=day=1;
year=1970; //Unix time starting point
} //not valid: set to default valid date
for(int m=0;m<13;m++) days[m]=days2[m];
} //constructor with assigned values
Date::Date(int julian) {
//Fliegel-Van Flandern algorithm to convert Julian date to Gregorian number month, day, and year
gregorian(julian,month,day,year);
if(leapYear()) days2[2]=29; else days2[2]=28;
for(int m=0;m<13;m++) days[m]=days2[m];
}//Date Julian
Date::Date (string str) { //constructor for todays date as "mm/dd/year
//Parse str by adding one char at a s time to the token until a "/" is encounter.
//When "/" is encountered start the next token
//int p=0;
int count=0;
int num[3];
string token[3];
int len=str.length();
for(int p=0; p<len;p++) {
if(str.substr(p,1)=="/") count++;
else token[count]+=str.substr(p,1);
}//parse str to create array of tokens
bool error=false;
for(int p=0;p<3;p++) {
try {
num[p]=stoi(token[p]);
}//try to convert to int
catch(invalid_argument&) {
num[p]=-1;
error=true;
} //catch
}//each of the 3 tokens
if(!error && validDate(num[0],num[1],num[2])) {
month=num[0];
day=num[1];
year=num[2];
} //no error
else {
month=day=1;
year=1970; //Unix time starting point
} //not valid: set to default valid date
for(int m=0;m<13;m++) days[m]=days2[m];
}//constructor with string such as "10/31/2016"
Date Date::operator=(const Date& otherDate) {
//assigns another instance of the date class to this.
month=otherDate.month;
day=otherDate.day;
year=otherDate.year;
return *this; //allows date1=date=date3;
}//overloaded operator =
Date Date::operator+(int numDays) {
//Adds the number of days to the Julian date.
Date other(month,day,year); //make copy of the date
int jd=other.julian(); //find the Julian date
jd+=numDays; //add the number of days to the Julian date
gregorian(jd,other.month,other.day,other.year); //Convert the Julian date back to Gregorian
if(other.leapYear()) days2[2]=29; else days2[2]=28;
for(int m=0;m<13;m++) other.days[m]=days2[m];
return other;
} //operator +
int Date::dayofYear() const {
//returns the day of the year, ie 2/1/???? is the 32 day of the year
int total=day;
for(int m=1;m<month;m++) total+=days[m];
return total;
}//dayofYear
void gregorian(int julian, int &mth, int &d, int &y) {
//Fliegel-Van Flandern algorithm to convert Julian date to Gregorian month, day, and year
int p,q,r,s,t,u,v;
p = julian + 68569;
q = 4*p/146097;
r = p - (146097*q + 3)/4;
s = 4000*(r+1)/1461001;
t = r - 1461*s/4 + 31;
u = 80*t/2447;
v = u/11;
y = 100*(q-49)+s+v;
mth = u + 2 - 12*v;
d = t - 2447*u/80;
} //Gregorian
int Date::julian() const {
int jd= day-32075+1461*(year+4800+(month-14)/12)/4+
367*(month-2-(month-14)/12*12) /12-3*((year+4900+(month-14)/12)/100)/4;
return jd;
}
bool Date::leapYear() const {
bool leap=false;
if(year%4==0) leap=true;
if(year%100==0 && year%400!=0) leap=false;
return leap;
}//leapYear
bool leapYear(int yr) {
bool leap=false;
if(yr%4==0) leap=true;
if(yr%100==0 && yr%400!=0) leap=false;
return leap;
}//leapYear
int Date::weekday() const {
//returns 0 for Sunday, 1 for Monday, etc.
static int t[] = { 0, 3, 2, 5, 0, 3, 5, 1, 4, 6, 2, 4 };
int y =year;
y-= month < 3;
return ( y + y/4 - y/100 + y/400 + t[month-1] + day) % 7;
}//weekday
int Date::getMonth() const {
//private variables cannot be accessed directly but require "getter" functions
return month;
}//getMonth
int Date::getDay() const {
return day;
}//
int Date::getYear() const {
return year;
}//getYear
string Date::toString() const {
stringstream oss; //a stream to append the values
oss<<month<<"/"<<day<<"/"<<year;
return oss.str();
}
bool Date::operator==(const Date& otherDate) {
return (month==otherDate.month && day==otherDate.day && year==otherDate.year);
}//operator ==
bool Date::operator<(const Date& otherDate) {
//A date is less than another date if is earlier
bool result=false; //assume false until proven true
if(year<otherDate.year) result=true;
else if(year==otherDate.year && month<otherDate.month) result=true;
else if(year==otherDate.year && month==otherDate.month && day<otherDate.day) result=true;
return result;
}//operator
bool Date::operator>(const Date& otherDate) {
//Convert both dates to Julian and compare the Julian dates
int jd1=julian();
int jd2=otherDate.julian();
return jd1>jd2;
}//operator
bool Date::operator<=(const Date& otherDate) {
//Convert both dates to Julian and compare the Julian dates
int jd1=julian();
int jd2=otherDate.julian();
return jd1<=jd2;
}//operator
bool Date::operator>=(const Date& otherDate) {
//Convert both dates to Julian and compare the Julian dates
int jd1=julian();
int jd2=otherDate.julian();
return jd1>=jd2;
}//operator
bool Date::operator!=(const Date& otherDate) {
//Convert both dates to Julian and compare the Julian dates
int jd1=julian();
int jd2=otherDate.julian();
return jd1!=jd2;
}//operator
ostream& operator << (ostream &output, const Date &d) {
output << d.toString();
return output;
} // operator <<
istream& operator >> (istream &input, Date &d) {
string s;
input >> s;
Date other(s); //create a new Date
d=other; //assign the new Date to d
return input;
} // operator >>
Date Date::thanksGiving()
{
Date turkeyDay(11, 01, year);
while (turkeyDay.weekday() != 4)
{
turkeyDay = turkeyDay + 1;
}
turkeyDay = turkeyDay + 21;
return turkeyDay;
}
int Date::season()//returns integer representing seasons
{
Date spring = {3,20,getYear()};//declare date for spring
Date summer = {6,20,getYear()};//declare date for summer
Date fall = {9,22,getYear()};//declare date for fall
Date winter = {12,21,getYear()};//declare date for winter
if(*this < spring)//if before spring then winter
return 0;
else if(*this < summer)//if before summer then spring
return 1;
else if(*this < fall)//if before fall then summer
return 2;
else if(*this < winter)//if before winter then fall
return 3;
else//else winter
return 0;
}
//************************************************************
//main.cpp
#include "Date.h"
#include <iostream>
using namespace std;
// Start of main
void bubbleSort(Date date[], int n)//is an array of dates and is the size of the array
{
int i, j;
for (i = 0; i < n - 1; i++)
// Last i elements are already in place
for (j = 0; j < n - i - 1; j++)
if (date[j] > date[j + 1])
{
Date temp = date[j];
date[j] = date[j + 1];
date[j + 1] = temp;
}
}
int main() {
// Declare arrays and variables
const int SIZE = 7; // Size of array elements
const int COUNT = 6; // Number of holidays
Date weekDays[SIZE]; // Weekday array
Date holidays[COUNT]; // Holiday array
string holidaysDescription[COUNT];
int year = 0;
Date easterSunday(04, 01, 2018); // Easter Sunday
holidays[0] = easterSunday;
holidaysDescription[0] = "Easter Sunday";
Date mothersDay(05, 13, 2018); // Mother's Day
holidays[1] = mothersDay;
holidaysDescription[1] = "Mother's Day";
Date memorialDay(05, 28, 2018); // Memorial Day
holidays[2] = memorialDay;
holidaysDescription[2] = "Memorial Day";
Date fathersDay(06, 17, 2018); // Fathers Day
holidays[3] = fathersDay;
holidaysDescription[3] = "Father's Day";
Date independenceDay(07, 04, 2018); // Independence Day
holidays[4] = independenceDay;
holidaysDescription[4] = "Independence Day";
// Prompt the user for current year
cout << "Please enter the current year: ";
cin >> year;// Read in year
cout << "\n";
// Search for the date of Thanksgiving and add it to
// the holiday array
Date currentYear = {1,1,2018};
Date giveThanks = currentYear.thanksGiving();
holidays[5] = giveThanks;
holidaysDescription[5] = "Thanksgiving";
bubbleSort(holidays, COUNT);//Sort the list of the array
cout << "The holidays are sorted by date: \n";
for (int index = 0; index < COUNT; index++)
{
// Display the holiday
int day = holidays[index].weekday();
cout << holidaysDescription[index] << " is on " << holidays[index] << " which falls on a ";
// Display the day
switch (day) {
case 0: cout << "Sunday" << endl; break;
case 1: cout << "Monday" << endl; break;
case 2: cout << "Tuesday" << endl; break;
case 3: cout << "Wednesday" << endl; break;
case 4: cout << "Thursday" << endl; break;
case 5: cout << "Friday" << endl; break;
case 6: cout << "Saturday" << endl; break;
}
}
for (int index = 0; index < COUNT; index++)
{
cout << holidays[index] << " is season " <<
holidays[index].season()<<endl;
}
system("pause");
return 0;
}
//*********************************************************
Output:
I have implemented the required functions. Please go through the updated header and cpp files.
Please give this solution a thumbs up if you find it helpful.
If you have any queries or issues with the above solution, kindly let me know in the comments instead of downvoting the solution. I would be happy to help you.
Thank you.
Add Answer to:
C++ Project Modify the Date Class:
Standards
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When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago