Question

In this lab, you will be creating a class that implements the Rule of Three (A Destructor, A Copy Constructor, and a Copy Assignment Operator). You are to create a program that prompts users to enter in contact information, dynamically create each object, then print the information of each contact to the screen. Some code has already been provided for you. To receive full credit make sure to implement the following:
Default Constructor - set Contact id to -1
Overloaded Constructor - used to set the Contact name, phoneNumber and id (Should take in 3 parameters)
Destructor
Copy Constructor
Copy Assignment Operator
Any other useful functions (getters/setters)
Main.cpp

#include
#include
#include "Contact.h"

using namespace std;

int main() {
const int NUM_OF_CONTACTS = 3;
vector contacts;

for (int i = 0; i < NUM_OF_CONTACTS; i++) {
string name, phoneNumber;
cout << "Enter a name: ";
cin >> name;
cout << "Enter a phoneNumber; ";
cin >> phoneNumber;

// TODO: Use i, name, and phone number to dynamically create a Contact object on the heap
// HINT: Use the Overloaded Constructor here!


// TODO: Add the Contact * to the vector...
}
cout << "\n\n----- Contacts ----- \n\n";

// TODO: Loop through the vector of contacts and print out each contact info

// TODO: Make sure to call the destructor of each Contact object by looping through the vector and using the delete keyword

return 0;
}

Contact.h

#ifndef CONTACT_H
#define CONTACT_H

#include
#include

using std::string;
using std::cout;

class Contact {
public:
Contact();
Contact(int id, string name, string phoneNumber);
~Contact();
Contact(const Contact& copy);
Contact& operator=(const Contact& copy);

private:
int *id = nullptr;
string *name = nullptr;
string *phoneNumber = nullptr;
};


#endif

Contact.cpp

#include "Contact.h"

Contact::Contact() {
this->id = new int(-1);
this->name = new string("No Name");
this->phoneNumber = new string("No Phone Number");
}

Contact::Contact(int id, string name, string phoneNumber) {
// TODO: Implement Overloaded Constructor
// Remember to initialize pointers on the heap!
}

Contact::~Contact() {
// TODO: Implement Destructor
}

Contact::Contact(const Contact ©) {
// TODO: Implement Copy Constructor
}

Contact &Contact::operator=(const Contact ©) {
// TODO: Implement Copy Assignment Operator
return *this;
}

Answer 1

Answer:

Explanation:

============== main.cpp =======================

#include <iostream>

using namespace std;

#include <iostream>

#include <vector>

#include "Contact.h"

using namespace std;

int main() {

const int NUM_OF_CONTACTS = 3;

vector<Contact *> contacts;

for (int i = 0; i < NUM_OF_CONTACTS; i++) {

string name, phoneNumber;

cout << "Enter a name: ";

cin >> name;

cout << "Enter a phoneNumber: ";

cin >> phoneNumber;

// Use i, name, and phone number to dynamically create a Contact object on the heap

// HINT: Use the Overloaded Constructor here!

Contact * newContact = new Contact(i+1,name,phoneNumber);

// Add the Contact * to the vector...

contacts.push_back(newContact);

}

cout << "\n\n----- Contacts ----- \n\n";

// Loop through the vector of contacts and print out each contact info

std::vector<Contact *>::iterator itrContact;

for(itrContact = contacts.begin(); itrContact !=contacts.end(); itrContact++)

{

cout<< " Id : " << (*itrContact)->getId();

cout<< " Name : " << (*itrContact)->getName();

cout<< " Phone-Number : " << (*itrContact)->getPhoneNumber() <<endl;

}

// Make sure to call the destructor of each Contact object by looping through the vector and using the delete keyword

for(int i = 0; i < NUM_OF_CONTACTS; i++)

{

delete contacts[i];

}

return 0;

}

================== contact.h =====================

#ifndef CONTACT_H

#define CONTACT_H

#include <string>

#include <iostream>

using std::string;

using std::cout;

class Contact {

public:

Contact();

Contact(int id, string name, string phoneNumber);

~Contact();

Contact(const Contact& copy);

Contact& operator=(const Contact& copy);

// getters

int getId() const;

string getName() const;

string getPhoneNumber() const;

//setters

void setId(int id);

void setName(string name);

void setPhoneNumber(string phoneNumber);

private:

int *id = nullptr;

string *name = nullptr;

string *phoneNumber = nullptr;

};

#endif

================= contact.cpp ========================

#include "Contact.h"

Contact::Contact() {

this->id = new int(-1);

this->name = new string("No Name");

this->phoneNumber = new string("No Phone Number");

}

Contact::Contact(int id, string name, string phoneNumber) {

// Implement Overloaded Constructor

// Remember to initialize pointers on the heap!

this->id = new int(id);

this->name = new string(name);

this->phoneNumber = new string(phoneNumber);

}

Contact::~Contact() {

// Implement Destructor

if(this->id != nullptr)

delete this->id;

if(this->name != nullptr)

delete this->name;

if(this->phoneNumber != nullptr)

delete this->phoneNumber;

}

Contact::Contact(const Contact &copy) {

// Implement Copy Constructor

this->id = new int(copy.getId());

this->name = new string(copy.getName());

this->phoneNumber = new string(copy.getPhoneNumber());

}

Contact &Contact::operator=(const Contact &copy) {

// Implement Copy Assignment Operator

if(this == &copy) // Checks for self Assignment

return *this;

this->id = new int(copy.getId());

this->name = new string(copy.getName());

this->phoneNumber = new string(copy.getPhoneNumber());

return *this;

}

// getters

int Contact::getId() const

{

return *(this->id);

}

string Contact::getName() const

{

return *(this->name);

}

string Contact::getPhoneNumber() const

{

return *(this->phoneNumber);

}

//setters

void Contact::setId(int id)

{

*(this->id) = id;

}

void Contact::setName(string name)

{

*(this->name) = name;

}

void Contact::setPhoneNumber(string phoneNumber)

{

*(this->phoneNumber) = phoneNumber;

}

====================Output =========================

is attached below