Question

C++

Program 3

Create a class Person

Include three(3) variables: firstName, lastName, YearOfBirth

Write default and parameterized constructors

Write getters and setters for each variable.

Declare 2 instances of the person class P1 and P2, one for both default and parm constructors

Declare ptrPerson1 and ptrPerson2.

Assign ptrPerson1 address of P1

Assign ptrPerson2 address of P2

Call all the getters and setters using the ARROW notation to test the class.

Example:    ptrP1à getFirstName()

Answer 1

#include <iostream>

#include <string>

using namespace std;

class Person {

private:

//data members

string firstName;

string lastName;

int yearOfBirth;

public:

//default constructor

Person() :firstName(""), lastName(""), yearOfBirth(0) {}

/*Year of birth can not be zero

so is the name

So basically we are placing a dummy data for default constructor*/

//parameterised constructor

Person(string fName, string lName, int year) : firstName(fName), lastName(lName), yearOfBirth(year) {}

//setter function for first name

void setFirstName(string fName) {

firstName = fName;

}

//getter function for first name

string getFirstName() {

return firstName;

}

//setter function for last name

void setLastName(string lName) {

lastName = lName;

}

//getter function for last name

string getLastName() {

return lastName;

}

//setter function for year of birth

void setYearOfBirth(int year) {

yearOfBirth = year;

}

//getter function for year of birth

int getYearOfBirth() {

return yearOfBirth;

}

};

int main() {

Person person1; //person class object , default constructor

Person person2("Green", "Man", 2000); //object by parameterised constructor

//Two Person type pointer

Person *ptrPerson1;

Person *ptrPerson2;

//assigning pointer to address

ptrPerson1 = &person1;

ptrPerson2 = &person2;

ptrPerson1->setFirstName("Red");

ptrPerson1->setLastName("Women");

ptrPerson1->setYearOfBirth(2005);

cout << "Person one detail : ";

cout << ptrPerson1->getFirstName() << " " << ptrPerson1->getLastName() << " " << ptrPerson1->getYearOfBirth() << endl;

cout << "Person two detail : ";

cout << ptrPerson2->getFirstName() << " " << ptrPerson2->getLastName() << " " << ptrPerson2->getYearOfBirth() << endl;

}