Question

C++ problem 11-6

In Programming Exercise 2, the class dateType was designed and implemented to keep track of a date, but it has very limited operations. Redefine the class dateType so that it can perform the following operations on a date, in addition to the operations already defined:

1. Set the month.
2. Set the day.
3. Set the year.
4. Return the month.
5. Return the day.
6. Return the year.
7. Test whether the year is a leap year.
8. Return the number of days in the month. For example, if the date is 3-12-2019, the number of days to be returned is 31 because there are 31 days in March.
9. Return the number of days passed in the year. For example, if the date is 3-18-2019, the number of days passed in the year is 77. Note that the number of days returned also includes the current day.
10. Return the number of days remaining in the year. For example, if the date is 3-18-2019, the number of days remaining in the year is 288.
11. Calculate the new date by adding a fixed number of days to the date. For example, if the date is 3-18-2019 and the days to be added are 25, the new date is 4-12-2019.

For dataType.h

//dataType.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();

int getDay();

int getYear();

int getDaysInMonth();

bool isLeapYear();

dateType(int month = 1, int day = 1, int year = 1900);

private:

int dMonth;

int dDay;

int dYear;

};

#endif

Answer 1

//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();

int getDay();

int getYear();

int getDaysInMonth();

bool isLeapYear();

dateType(int month = 1, int day = 1, int year = 1900);

private:

int dMonth;

int dDay;

int dYear;

};

#endif

//dateType.cpp

#include"dateType.h"
#include<iostream>
using namespace std;

void dateType::setDate(int month, int day, int year){
   dMonth = month;
   dDay = day;
   dYear = year;
}

void dateType::setMonth(int month){
   dMonth = month;
}

void dateType::setDay(int day){
   dDay = day;
}

void dateType::setYear(int year){
   dYear = year;
}

void dateType::print() const{
   cout<<dMonth<<"-"<<dDay<<"-"<<dYear<<endl;
}

int dateType::numberOfDaysPassed(){
   int numDays=0;
   int monthDays[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
   for(int i=1;i<dMonth;i++){
       if(i==2 && this->isLeapYear())numDays++;
       numDays+=monthDays[i];
   }
   numDays+=dDay;
   return numDays;
}

int dateType::numberOfDaysLeft(){
   if(this->isLeapYear()){
       if(dMonth == 1 || (dMonth==2 && dDay<29))return 366 - this->numberOfDaysPassed();
   }
   return 365 - this->numberOfDaysPassed();
}

void dateType::incrementDate(int nDays){
   bool endofMonth;
   int monthDays[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
   for(int i=0;i<nDays;i++){
       endofMonth = false;
        if (dMonth == 2 && this->isLeapYear()) endofMonth = (dDay == 29);
        else endofMonth = (dDay == monthDays[dMonth]);

        if (!endofMonth) ++dDay;
  
        else{
        if (dMonth < 12)
        {
        ++dMonth;
        dDay = 1;
        }
        else
        {
        ++dYear;
        dMonth = 1;
        dDay = 1;
        }
        }
   }  
  
}

int dateType::getMonth(){
   return dMonth;
}

int dateType::getDay(){
   return dDay;
}

int dateType::getYear(){
   return dYear;
}

int dateType::getDaysInMonth(){
   int monthDays[13]={0,31,28,31,30,31,30,31,31,30,31,30,31};
   return monthDays[dMonth];
}

bool dateType::isLeapYear(){
   if ((dYear % 4 == 0 && dYear % 100 != 0) || dYear % 400 == 0) return true;

   return false;
}

dateType::dateType(int month , int day , int year ){
   dMonth = month;
   dDay = day;
   dYear = year;  
}

//main.cpp

#include"dateType.cpp"

int main(){
   dateType date1(3,12,2019);
   cout<<"number of days in month : "<<date1.getDaysInMonth()<<"\n";
   dateType date2(3,18,2019);
  
   cout<<"number of days passed : "<<date2.numberOfDaysPassed()<<"\n";
   cout<<"number of days remaining : "<<date2.numberOfDaysLeft()<<"\n";
   date2.incrementDate(25);
   date2.print();
   return 0;
}

//sample output