Question

Design a class that holds the following personal data: name, age, and phone number. Write appropriate accessor and mutator functions. Demonstrate the class by writing a program that creates three instances of it. One instance should hold your information, and the other two should hold your friend's or family member's information.

Answer 1

The program in C++ is as follows:

#include <iostream>

using namespace std;

class MyClass {

public:

string name;

int age;

int phone;};

int main() {

MyClass me;

me.name = "MrRoyal";

me.age = 10;

me.phone = 12345;

MyClass frnd;

frnd.name = "Friend";

frnd.age = 12;

frnd.phone = 34567;

MyClass family;

family.name = "Family";

family.age = 15;

family.phone = 10111;

cout << me.name << " " << me.age<<" "<<me.phone<<endl;

cout << frnd.name << " " << frnd.age<<" "<<frnd.phone<<endl;

cout << family.name << " " << family.age<<" "<<family.phone<<endl;

return 0;}

Step-by-step explanation:

This defines the class

class MyClass {

The access specifier

public:

The next three lines are the attributes of the class

string name;

int age;

int phone;};

The main begins here

int main() {

This creates the class instance for me (you)

MyClass me;

This sets the name

me.name = "MrRoyal";

This sets the age

me.age = 10;

This sets the phone number

me.phone = 12345;

This creates the class instance for your friend

MyClass frnd;

This sets the name

frnd.name = "Friend";

This sets the age

frnd.age = 12;

This sets the phone number

frnd.phone = 34567;

This creates the class instance for a family member

MyClass family;

This sets the name

family.name = "Family";

This sets the age

family.age = 15;

This sets the phone number

family.phone = 10111;

These print the necessary outputs

cout << me.name << " " << me.age<<" "<<me.phone<<endl;

cout << frnd.name << " " << frnd.age<<" "<<frnd.phone<<endl;

cout << family.name << " " << family.age<<" "<<family.phone<<endl;

return 0;}