Answer to Question #213126 in C++ for Hemambar

Question

Create a class Date whose object can store a day, month and year. Include the necessary

constructors to initialize the objects and function to display the date in ‘dd/mm/yyyy’ format.

Define a non-member function findAge(Date dob, Date today) which should return the calculated

age from the input dates ‘dob’ and ‘today’. Set this function as friend to Date class. Write a main

function to read the today’s date and date of birth of a person from the user and display the age

of that person by calling the proper function.

Answer 1

#include <iostream>

using namespace std;

class Date {
private:
    int day, month, year;
public:
    Date(int d, int m, int y) {
        day = d;
        month = m;
        year = y;
        cout << day << '/' << month << '/' << year << '\n';
    }

    int getYear() { return year; }

    friend int findAge(Date, Date);
};

int findAge(Date dob, Date today) {
    return today.getYear() - dob.getYear();
}

int main() {
    int d, m, y, db, mb, yb, age;
    cout << "Write today's date in this format (d m y): ";
    cin >> d >> m >> y;
    cout << "Write date of birth in this format (d m y): ";
    cin >> db >> mb >> yb;
    Date today(d, m, y), dob(db, mb, yb);
    age = findAge(dob, today);
    cout << "The age is: " << age << '\n';
    return 0;
}

Example:
Write today's date in this format (d m y): 16 7 2021
Write date of birth in this format (d m y): 7 3 2002
16/7/2021
7/3/2002
The age is: 19