Programming Exercise 11-8 PROBLEM:The class dateType defined in Programming Exercise 6 prints the date in numerical...
Programming Exercise 11-8
PROBLEM:The class dateType defined in Programming Exercise 6 prints the date in numerical form. Some applications might require the date to be printed in another form, such as March 24, 2019. Derive the class extDateType so that the date can be printed in either form.
Add a member variable to the class extDateType so that the month can also be stored in string form. Add a member function to output the month in the string format, followed by the year—for example, in the form March 2019.
Write the definitions of the functions to implement the operations for the class extDateType.
GIVEN FILES ARE: dateType.h, dateTypeImp.cpp, extDateType.h
FILE NEEDED: extDateTypeImp.cpp
~~~~~dateType.h~~~~~
#ifndef dateType_H
#define dateType_H
class dateType
{
public:
void setDate(int, int, int);
void setMonth(int);
void setDay(int);
void setYear(int);
void print() const;
int numberOfDaysPassed();
int numberOfDaysLeft();
void incrementDate(int nDays);
int getMonth() const;
int getDay() const;
int getYear() const;
int getDaysInMonth();
bool isLeapYear();
dateType(int = 1, int = 1, int = 1900);
private:
int dMonth;
int dDay;
int dYear;
};
#endif
~~~~~~dateTypeImp.cpp~~~~~~
#include <iostream>
#include "dateType.h"
using namespace std;
void dateType::setDate(int month, int day, int year)
{
if (year >= 1)
dYear = year;
else
dYear = 1900;
if (1 <= month && month <= 12)
dMonth = month;
else
dMonth = 1;
switch (dMonth)
{
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
if (1 <= day && day <= 31)
dDay = day;
else
dDay = 1;
break;
case 4:
case 6:
case 9:
case 11:
if (1 <= day && day <= 30)
dDay = day;
else
dDay = 1;
break;
case 2:
if (isLeapYear())
{
if (1 <= day && day <= 29)
dDay = day;
else
dDay = 1;
}
else
{
if (1 <= day && day <= 28)
dDay = day;
else
dDay = 1;
}
}
}
void dateType::setMonth(int m)
{
dMonth = m;
}
void dateType::setDay(int d)
{
dDay = d;
}
void dateType::setYear(int y)
{
dYear = y;
}
void dateType::print() const
{
cout << dMonth << "-" << dDay << "-" << dYear;
}
int dateType::getMonth() const
{
return dMonth;
}
int dateType::getDay() const
{
return dDay;
}
int dateType::getYear() const
{
return dYear;
}
int dateType::getDaysInMonth()
{
int noOfDays;
switch (dMonth)
{
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
noOfDays = 31;
break;
case 4:
case 6:
case 9:
case 11:
noOfDays = 30;
break;
case 2:
if (isLeapYear())
noOfDays = 29;
else
noOfDays = 28;
}
return noOfDays;
}
bool dateType::isLeapYear()
{
if (((dYear % 4 == 0) && (dYear % 100 != 0)) || dYear % 400 == 0)
return true;
else
return false;
}
dateType::dateType(int month, int day, int year)
{
setDate(month, day, year);
}
int dateType::numberOfDaysPassed()
{
int monthArr[13] = {0, 31, 28, 31, 30, 31, 30,
31, 31, 30, 31, 30, 31};
int sumDays = 0;
int i;
for (i = 1; i < dMonth; i++)
sumDays = sumDays + monthArr[i];
if (isLeapYear() && dMonth > 2)
sumDays = sumDays + dDay + 1;
else
sumDays = sumDays + dDay;
return sumDays;
}
int dateType::numberOfDaysLeft()
{
if (isLeapYear())
return 366 - numberOfDaysPassed();
else
return 365 - numberOfDaysPassed();
}
void dateType::incrementDate(int nDays)
{
int monthArr[13] = {0, 31, 28, 31, 30, 31, 30,
31, 31, 30, 31, 30, 31};
int daysLeftInMonth;
daysLeftInMonth = monthArr[dMonth] - dDay;
if (daysLeftInMonth >= nDays)
dDay = dDay + nDays;
else
{
dDay = 1;
dMonth++;
nDays = nDays - (daysLeftInMonth + 1);
while (nDays > 0)
if (nDays >= monthArr[dMonth])
{
nDays = nDays - monthArr[dMonth];
if ((dMonth == 2) && isLeapYear())
nDays--;
dMonth++;
if (dMonth > 12)
{
dMonth = 1;
dYear++;
}
}
else
{
dDay = dDay+nDays;
nDays = 0;
}
}
}
}
else
{
dDay = dDay+nDays;
nDays = 0;
}
}
}
~~~~~extDateType.h~~~~~
#ifndef extDateType_H
#define extDateType_H
#include <string>
#include "dateType.h"
using namespace std;
string months[] = {"January", "February", "March", "April",
"May", "June", "July", "August",
"September", "October", "November", "December"};
class extDateType: public dateType
{
public:
void printLongDate();
void setDate(int, int, int);
void setMonth(int m);
void printLongMonthYear();
extDateType();
extDateType(int, int, int);
private:
string month;
};
#endif
Homework Answers
Program
#include <cstdlib>
#include <iostream>
using namespace std;
class dateType
{
public:
dateType(int month = 1, int day = 1, int year = 1900);
void setDate(int month, int day, int year);
int getDay() const;
int getMonth() const;
int getYear() const;
void printDate() const;
int NumOfpassedDays(int , int );
int RemainingDays(int );
int setMonth(int );
void NewDate(int ,int , int , int );
bool isLeapYear(int);
protected:
int dMonth; //variable to store the month
int dDay; //variable to store the day
int dYear; //variable to store the year
int noDays;
int Passeddays;
};
class extDateType : public dateType{
string months[12]={"January","February","March","April","May","June","July","August","September","October","November","December"};
public:
extDateType(int m = 1, int d = 1, int y = 1900) : dateType(m, d, y) {
}
void printDate() const {
int m = dateType::getMonth();
int d = dateType::getDay();
int y = dateType::getYear();
cout << months[m-1] << " " << d << ", " << y << endl;
}
};
void dateType::setDate(int month, int day, int year)
{
while(month<1 || month>12)
{
cout << "Entered month "<<month<< " is wrong"<<endl;
cout << "Enter correct month"<<endl;
cin>>month;
}
dMonth = month;
// Checking date is valid
while(day<1 || day>31)
{
cout << "Entered day "<<day<<" is wrong"<<endl;
cout<<"Enter correct day"<<endl;
cin>>day;
}
dDay = day;
int count_digits = 0;
int flag=0;
int year1;
while(flag==0)
{
year1=year;
count_digits=0;
while (year) {
year /= 10;
count_digits++;
}
if(count_digits != 4)
{
cout << "Entered year "<<year1<<" is wrong"<<endl;
cout<<"Enter correct year"<<endl;
cin>>year;
flag=0;
}
else
flag=1;
}
dYear = year1;
}
bool dateType::isLeapYear(int year)
{
if((year%4==0)&&(year%100==0)||(year %400 ==0))
{
// cout<<"leap year"<<endl;
return true;
}
else
{
// cout<<"not leap year"<<endl;
return false;
}
}
int dateType::getDay() const
{
return dDay;
}
int dateType::getMonth() const
{
return dMonth;
}
int dateType::getYear() const
{
return dYear;
}
void dateType::printDate() const
{
cout << dMonth << "-" << dDay << "-" << dYear<<endl;
}
//Constructor with parameters
dateType::dateType(int month, int day, int year)
{
setDate(month, day, year);
isLeapYear(year);
cout<<dDay <<" "<<dMonth<<" "<<dYear<<endl;
}
void dateType::NewDate(int month,int day, int year, int adddays)
{
int daysPerMonth[12] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
for (int i=0;i<adddays;i++)
{
day++;
if (day > daysPerMonth[month-1] || ( month==2 && day==29 && !isLeapYear(year) ) )
{
day = 1;
month++;
if (month==13)
{
month = 1;
year++;
}
}
}
dDay = day;
dMonth = month;
dYear = year;
cout<<dMonth<<" "<<dDay<<" "<<dYear;
}
int dateType::setMonth(int month)
{
int year1;
year1=dYear;
if(month<=12)
{
dMonth=month;
switch(month)
{
//include the case 1 also
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12: noDays=31;
break;
case 4:
case 6:
case 9:
case 11:noDays=30;
break;
case 2:if(isLeapYear(year1))
noDays=29;
else
noDays=28;
}
}
else
{
cout<<"Invalid Month"<<endl;
dMonth=0;
}
return noDays;
}
int dateType::NumOfpassedDays(int month, int day)
{
int i,passedDays=0;
for(i=1; i<month;i++)
{
if(i==month)
{
noDays=noDays+1;
}
else
passedDays+=setMonth(i);
}
passedDays+=day;
Passeddays=passedDays;
return passedDays;
}
int dateType::RemainingDays(int year)
{
int remainingDays;
NumOfpassedDays(dMonth, dDay);
if(isLeapYear(year))
{
remainingDays=366-Passeddays;
}
else
remainingDays=365-Passeddays;
return remainingDays;
}
int main()
{
int dd,mm,yy,nd;
cout<<"Enter month: ";
cin>>mm;
cout<<"Enter day: ";
cin>>dd;
cout<<"Enter year: ";
cin>>yy;
extDateType d1(mm,dd,yy);
cout<<"Date is ";
d1.printDate();
return 0;
}
Output
Please find the following answer in cpp which has derived class from base class "dateTyepe".
Note: I have added inline comments and screen shots for better understanding.
Program:
exDateTypeImp.cpp
#include <iostream>
#include "extDateType.h"
using namespace std;
//define the months array here, moved from header to cpp
file.
//added extern for string months in extDateType.h file,
to avoid compilation failure
string months[] = {"January", "February", "March", "April",
"May", "June", "July", "August",
"September", "October", "November", "December"};
//print the longdate in the format, Month, Day, Year
(March, 3, 2020)
void extDateType::printLongDate()
{
cout <<month <<", "<<getDay()<<",
"<<getYear()<<endl;
}
//set the date by calling base class's setDate
method
void extDateType::setDate(int month, int day, int year)
{
dateType::setDate(month, day, year);
}
//set the extDateType class member variable month, which is
the
//representation in string
void extDateType::setMonth(int mon)
{
month = months[mon-1];
}
//March, 2017, to diaplay in month, year
format
void extDateType::printLongMonthYear()
{
cout <<month <<", "<<getYear()<<endl;
}
//default constructor for extDateType class
extDateType::extDateType()
{
setDate(1, 1, 1990);
month=months[0];
}
//constructor will monthm day year as
arguments
extDateType::extDateType(int mon, int day, int year)
{
setDate(mon, day, year);
month=months[mon-1];
}
extDateType.h
#ifndef extDateType_H
#define extDateType_H
#include <string>
#include "dateType.h"
using namespace std;
//extern the months string
array and define it in extDateImp.cpp file
extern string months[];
class extDateType: public dateType
{
public:
void printLongDate();
void setDate(int, int, int);
void setMonth(int m);
void printLongMonthYear();
extDateType();
extDateType(int, int, int);
private:
string month;
};
#endif
dateTypeImp.cpp
#include <iostream>
#include "dateType.h"
using namespace std;
void dateType::setDate(int month, int day, int year)
{
if (year >= 1)
dYear = year;
else
dYear = 1900;
if (1 <= month && month <= 12)
dMonth = month;
else
dMonth = 1;
switch (dMonth)
{
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
if (1 <= day && day <= 31)
dDay = day;
else
dDay = 1;
break;
case 4:
case 6:
case 9:
case 11:
if (1 <= day && day <= 30)
dDay = day;
else
dDay = 1;
break;
case 2:
if (isLeapYear())
{
if (1 <= day && day <= 29)
dDay = day;
else
dDay = 1;
}
else
{
if (1 <= day && day <= 28)
dDay = day;
else
dDay = 1;
}
}
}
void dateType::setMonth(int m)
{
dMonth = m;
}
void dateType::setDay(int d)
{
dDay = d;
}
void dateType::setYear(int y)
{
dYear = y;
}
void dateType::print() const
{
cout << dMonth << "-" << dDay << "-"
<< dYear;
}
int dateType::getMonth() const
{
return dMonth;
}
int dateType::getDay() const
{
return dDay;
}
int dateType::getYear() const
{
return dYear;
}
int dateType::getDaysInMonth()
{
int noOfDays;
switch (dMonth)
{
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
noOfDays = 31;
break;
case 4:
case 6:
case 9:
case 11:
noOfDays = 30;
break;
case 2:
if (isLeapYear())
noOfDays = 29;
else
noOfDays = 28;
}
return noOfDays;
}
bool dateType::isLeapYear()
{
if (((dYear % 4 == 0) && (dYear % 100 != 0)) || dYear % 400
== 0)
return true;
else
return false;
}
dateType::dateType(int month, int day, int year)
{
setDate(month, day, year);
}
int dateType::numberOfDaysPassed()
{
int monthArr[13] = {0, 31, 28, 31, 30, 31, 30,
31, 31, 30, 31, 30, 31};
int sumDays = 0;
int i;
for (i = 1; i < dMonth; i++)
sumDays = sumDays + monthArr[i];
if (isLeapYear() && dMonth > 2)
sumDays = sumDays + dDay + 1;
else
sumDays = sumDays + dDay;
return sumDays;
}
int dateType::numberOfDaysLeft()
{
if (isLeapYear())
return 366 - numberOfDaysPassed();
else
return 365 - numberOfDaysPassed();
}
void dateType::incrementDate(int nDays)
{
int monthArr[13] = {0, 31, 28, 31, 30, 31, 30,
31, 31, 30, 31, 30, 31};
int daysLeftInMonth;
daysLeftInMonth = monthArr[dMonth] - dDay;
if (daysLeftInMonth >= nDays)
dDay = dDay + nDays;
else
{
dDay = 1;
dMonth++;
nDays = nDays - (daysLeftInMonth + 1);
while (nDays > 0)
if (nDays >= monthArr[dMonth])
{
nDays = nDays - monthArr[dMonth];
if ((dMonth == 2) && isLeapYear())
nDays--;
dMonth++;
if (dMonth > 12)
{
dMonth = 1;
dYear++;
}
}
else
{
dDay = dDay+nDays;
nDays = 0;
}
}
}
dateType.h
#ifndef dateType_H
#define dateType_H
class dateType
{
public:
void setDate(int, int, int);
void setMonth(int);
void setDay(int);
void setYear(int);
void print() const;
int numberOfDaysPassed();
int numberOfDaysLeft();
void incrementDate(int nDays);
int getMonth() const;
int getDay() const;
int getYear() const;
int getDaysInMonth();
bool isLeapYear();
dateType(int = 1, int = 1, int = 1900);
private:
int dMonth;
int dDay;
int dYear;
};
#endif
main.cpp
#include <iostream>
#include "dateType.h"
#include "extDateType.h"
using namespace std;
int main()
{
//with default constructor
extDateType ext;
ext.printLongDate();
ext.setMonth(5);
ext.printLongMonthYear();
//without default constructor
extDateType ext1(11,6,1987);
ext1.printLongDate();
ext1.printLongMonthYear();
return 0;
}
sample Output:
January, 1, 1990
May, 1990
November, 6, 1987
November, 1987
Screen shot for extDateType.h
and extDateTypeImp.cpp
extDateTypeImp.cpp
![{ #include <iostream> #include extDateType.h using namespace std; 1/define the months array here string months[] = {Januar](http://img.homeworklib.com/questions/9b53c9d0-bfd4-11eb-870c-bf5a0a426c13.png?x-oss-process=image/resize,w_560)
extDateType.h
Add Answer to:
Programming Exercise 11-8
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ESIGN PAGE LAYOUT REFERENCES an-E4_]Ka"!Aa.le' | =.=-'E- 恒栏1순↓ | T Font Paragraph // To declare a class for the Date ADT // This is the header file DateType.h class DateType public: void Initialize (int newMonth, int newDay, int newYear) int GetYear) const; int GetMonth() const int GetDay) const private: int year; int month; int day; search
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The class date Type implements the date in a program. Write the class functions as specified in the UML class diagram. The values for the month, day, and year should be validated (in the class functions) before storing the date into the data members. Set the invalid member data to...
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ESIGN PAGE LAYOUT REFERENCES an-E4_]Ka"!Aa.le' | =.=-'E- 恒栏1순↓ | T Font Paragraph // To declare a class for the Date ADT // This is the header file DateType.h class DateType public: void Initialize (int newMonth, int newDay, int newYear) int GetYear) const; int GetMonth() const int GetDay) const private: int year; int month; int day; search
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