Question

12.2 LAB 12.2: Classes (Date) C++

Rewrite the class definition of Date class (From Lab 12.1) including 4 added member functions:

1. bool isLeapYear(): this function will return true if the year of the date is a leap year.
2. int daysPassed(): This function will return how many days has been passed in this year.
3. int daysLeft(): This function will return how many days has left of this year.
4. int diff(Date AnotherDate): This function will return the difference between the calling object date and another date object.

Write the definition of the member functions of the Date class. Please take a input from user for month, day and year. Create a Date object with them. Output whether the date is a leap year, how many days has been passed in this year and how many days is left. Take input for another date (month, day and year). Output the difference between the current date and the second date.

Ex. If the input is: 1 1 2012 1 1 2013, Then output is

2012 is a leap year
1 day has been passed in this year
365 days are left for this year
Difference is: 0 days

Answer 1

//SINCE LAB 12.1 WAS NOT GIVEN SO HERE A NEW CLASS IS USED

#include<iostream>
using namespace std;
//body of the class
class date
{
        int mm,dd,yy; //data members to srtore the first date
        int bd,bm,by;//data members to srtore the second date
    public:
        void input(); //method to input the date
        void isleap(); //method to check leap or not
        int dayspassed(); //method to return numberof days passed
        int daysleft(); //method to return number of days left
        void difference(); //method to comput the difference
};
void date :: input()
{
   //read the first date
   cout<<endl<<"Enter the first date";
   cout<<"\nEnter the day";
   cin>>dd;//reed the day
   cout<<endl<<"Enter the month";
   cin>>mm;//read the month
   cout<<endl<<"Enter the year";
   cin>>yy;//read the year
   //read the second date
   cout<<endl<<"Enter the second date";
   cout<<"\nEnter the day";
   cin>>bd;//reed the day
   cout<<endl<<"Enter the month";
   cin>>bm;//read the month
   cout<<endl<<"Enter the year";
   cin>>by;//read the year
}
  
void date :: isleap()
{
    if((yy%4==0) && (yy%100!=0)||(yy%400==0)) //condition for leap year
    {
       cout<<endl<<yy<<" is a leap year";      
       }
    else
    {
       cout<<endl<<yy<<" is not a leap year";
      
       }
   
}

int date :: dayspassed()
{
   int mdays[]={31,28,31,30,31,30,31,31,30,31,30,31}; //assign the maximum days of the months
   int day,dayspass=0;
   int i;
   if((yy%4==0) && (yy%100!=0)||(yy%400==0)) //check for leap years
   {
      day=366; //set the number of days for this year
      mdays[1]=29;//set the days for february month
       }
   else
       day=365; //set the number of days for this year
       for(i=0;i<mm-1;i++) //add number of days left as a whole month
       dayspass=dayspass+mdays[i];
       dayspass = dayspass+dd;//add remaining days
       return dayspass; //return the num,ber of days passed
   }
   int date :: daysleft()
   {
     
      int dayleft;
          int n= dayspassed(); //compuet the number of days passed
      if((yy%4==0) && (yy%100!=0)||(yy%400==0)) //check for leap year
      dayleft=366-n;//number of days left when leap year
      else
      dayleft = 365-n;//number of days left when not a leap year
      return dayleft; //return the number of days left
   }
     
   void date::difference()
   {
   int z,r,s;
   //block to compte the number of days difference
    if(dd >= bd)
z=bd-bd;
else
if(yy%4==0 && yy%100!=0 || yy%400==0) //for leap year
   {
   if(mm==2) //february month
   {
       dd=dd+29;
       mm=mm-1;
       z=dd-bd;
       }
   }
   else
       if(mm==2)//february month
       {
       dd=dd+28;
       mm=mm-1;
       z=dd-bd;
       }
else //months having 31 days
if(mm==1 || mm==3 || mm==5 || mm==7 || mm==8 || mm==10 || mm==12)
       {
       dd=dd+31;
       mm=mm-1;
       z=dd-bd;
       }
       else
           { //months having 30 days
           dd=dd+30;
           mm=mm-1;
           z=dd-bd;
           }
       if(mm<bm)
       {
       mm=mm+12;
       yy=yy-1;
       r=mm-bm;
       }
       else   
           r=mm-bm; //difference between the months
       s = yy-by; //difference of years
       cout<<endl<<"Difference is "<<z<<" days "<<r<<" months "<<s<<" years.";
   }
   //driver program
   int main()
   {
       date d;
       int p,l;
       //call to input()
       d.input();
       //call to check leap or not
   d.isleap();
   //call to dayspassed()
   p=d.dayspassed();
   //call to daysleft()
   l=d.daysleft();
   //display the details
   cout<<endl<<p<<" days has been passed in this year";
   cout<<endl<<l<<" days left for this year";
   d.difference();
  
   }

OUTPUT