Write a Twitter class that sets the Twitter user first (who is to be followed) and lets the client add up to 5 followers, which will be stored in an array with a capacity of 5. The user can be of type string or Profile; each follower can also be of type string or Profile.

C++ code explained below with its sample outputs

Explanation:

Twitter.h

#ifndef Twitter_h

#define Twitter_h

#include <iostream>

using std::string;

using std::cout;

using std::endl;

template <typename T>

class Twitter

{

private:

string name;

T followers[5];

int numFollowers;

public:

Twitter(string n);

bool AddFollower(T follower);

bool RemoveFollower(T follower);

void PrintFollowers();

};

template <typename T>

Twitter<T>::Twitter(string n)

{

name = n;

numFollowers = 0;

}

template <typename T>

bool Twitter<T>::AddFollower(T follower)

{

if(numFollowers < 5)

{

followers[numFollowers] = follower;

numFollowers++;

return true;

}

else

return false;

}

template <typename T>

bool Twitter<T>::RemoveFollower(T follower)

{

int index;

bool found = false;

for(index = 0; index < numFollowers; index++)

{

if(followers[index] == follower)

{

found = true;

break;

}

}

if(found)

{

//shift all other followers after the one to be removed to one position left

for(++index; index < numFollowers; ++index)

{

followers[index-1] = followers[index];

}

numFollowers--;

return true;

}

else

return false;

}

template <typename T>

void Twitter<T>::PrintFollowers()

{

cout << "Followers for " << name << endl;

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

cout << followers[i] << endl;

cout << "" << endl << endl;

}

#endif /* Twitter_h */

main.cpp

#include "Twitter.h"

#include <iostream>

using namespace std;

struct Profile {

string userName;

int age;

string state;

};

ostream& operator << (ostream & output, Profile p) {

output << p.userName;

return output;

}

bool operator == (const Profile &p1, const Profile p2)

{

return p1.userName == p2.userName;

}

int main()

{

Twitter<string> t1("John");

Twitter<Profile> t2("Bob");

cout << "Adding followers to John" << endl;

t1.AddFollower("Bill");

t1.AddFollower("Jack");

t1.PrintFollowers();

Profile p1 = {"Alice", 20, "Alaska"};

Profile p2 = {"Janet", 22, "California"};

Profile p3 = {"Jim", 20, "Texas"};

cout << "Adding follower profiles to Bob" << endl;

t2.AddFollower(p1);

t2.AddFollower(p2);

t2.AddFollower(p3);

t2.PrintFollowers();

cout << "Removing Bill from John" << endl;

t1.RemoveFollower("Bill");

cout << "Removing Janet's profile from Bob" << endl << endl;

t2.RemoveFollower(p2);

t1.PrintFollowers();

t2.PrintFollowers();

}

output

-

Adding followers to John

Followers for John

Bill

Jack

Adding follower profiles to Bob

Followers for Bob

Alice

Janet

Jim

Removing Bill from John

Removing Janet's profile from Bob

Followers for John

Jack

Followers for Bob

Alice

Jim

answer; i believe the above is false;