Answer this in c++

#include

#include

#include

using namespace std;

class Person

{

public:

Person() {

setData("unknown-first", "unknown-last");

}

Person(string first, string last) {

setData(first, last);

}

void setData(string first, string last) {

firstName = first;

lastName = last;

}

void printData() const {

cout << " Name: " << firstName << " " << lastName << endl;

}

private:

string firstName;

string lastName;

};

class Musician : public Person

{

public:

Musician() {

// TODO: set this derived class member

// variable instrument to "unknown-instrument". The base class content will be

// initialized according to the base class's default constructor.

}

Musician(string first, string last, string inst)

// TODO: Before the opening brace.

//construct the base class using the base class parameterized

// constructor. Pass the base class content (first, last)

// up to the base class.

{

// After the opening brace, set the one

// derived class member variable instrument according to the corresponding

// parameter.

}

void setData(string first, string last, string inst) {

// TODO: The base class and derived classes both have setData functions.

// The derived class setData function overrides the base class one. However,

// we can invoke the base class version of the function here if we scope to it.

// Since the member variables first, last are stored

// in the base class, use the base class's setData function to set those

// values according to the corresponding parameters.

// Then set the remaining derived class variable.

}

void printData() const {

Person::printData();

cout << "Instrument: " << instrument << endl;

}

private:

string instrument;

};

class Writer : public Person

{

public:

Writer() {

// TODO: set this derived class member

// variable genre to "unknown-genre". The base class content will be

// initialized according to the base class's default constructor.

}

Writer(string first, string last, string gen)

// TODO: Before the opening brace.

//construct the base class using the base class parameterized

// constructor. Pass the base class content (first, last)

// up to the base class.

{

// After the opening brace, set the one

// derived class member variable genre according to the corresponding

// parameter.

}

void setData(string first, string last, string gen) {

// TODO: The base class and derived classes both have setData functions.

// The derived class setData function overrides the base class one. However,

// we can invoke the base class version of the function here if we scope to it.

// Since the member variables first, last are stored

// in the base class, use the base class's setData function to set those

// values according to the corresponding parameters.

// Then set the remaining derived class variable.

}

void printData() const {

Person::printData();

cout << "Genre: " << genre << endl;

}

private:

string genre;

};

int main() {

int numberOfMusicians = 0;

int numberOfWriters = 0;

string str1, str2, str3;

ifstream fin;

// TODO: Open the file music.txt. Print an error message and exit

// the program if the file cannot be opened. 5 pts.

// TODO: Read the number at the beginning of the text file. That number

// indicates the number of musicians in the list (which is also the length

// of the musicians' array). 5 pts.

//

// Dynamically allocate an array of musician objects. The array should be

// the exact length needed to read the file. 10 pts.

//

// Use a for-loop to load the array with the content from the text file. 15 pts.

//

// Close the text file when you are done with it. 5 pts.

// TODO: Open the file writer.txt. Print an error message and exit

// the program if the file cannot be opened. 5 pts.

// TODO: Read the number at the beginning of the text file. That number

// indicates the number of writers in the list (which is also the length

// of the writers' array). 5 pts.

//

// Dynamically allocate an array of writer objects. The array should be

// the exact length needed to read the file. 10 pts.

//

// Use a for-loop to load the array with the content from the text file. 15 pts.

//

// Close the text file when you are done with it. 5 pts.

// TODO: Loop through the musicians' array and print all of its data.

// Then loop through the writers' array and print all of its data. 15 pts.

// Remember to release all dynamically allocated memory before exiting. 5 pts.

return 0;

}