Question

How could I separate the following code to where I have a gradebook.cpp and gradebook.h file?

#include <iostream>
#include <stdio.h>
#include <string>
using namespace std;

class Gradebook {

public :
int homework[5] = {-1, -1, -1, -1, -1};
int quiz[5] = {-1, -1, -1, -1, -1};
int exam[3] = {-1, -1, -1};
string name;

int printMenu() {
int selection;
cout << "-=| MAIN MENU |=-" << endl;
cout << "1. Add a student" << endl;
cout << "2. Remove a student" << endl;
cout << "3. Change a student's grade" << endl;
cout << "4. Change group weights" << endl;
cout << "5. Change the gradebook name" << endl;
cout << "6. Display class averages" << endl;
cout << "7. Display full report" << endl;
cout << "0. QUIT\n" << endl;
cout << "Enter an action: ";
cin >> selection;
cout << endl;
return selection;
}

string addStudent() {
string firstName, lastName, stuName;
cout << "-=| ADDING STUDENT |=-" << endl;
cout << "Please enter the student's name (first and last name): ";
cin >> firstName >> lastName;
firstName[0] = toupper(firstName[0]);
lastName[0] = toupper(lastName[0]);
stuName = firstName + " " + lastName;
return stuName;
}

int changeGrade() {
int num;
cout << "-=| CHANGING GRADE |=-" << endl;
cout << "1. Change a homework grade" << endl;
cout << "2. Change a quiz grade" << endl;
cout << "3. Change a exam grade\n" << endl;
cout << "What type of grade would you like to change: ";
cin >> num;
return num;
}

};

Answer 1

First of all remember that ".h" file and ".cpp" file are called the Header file and the C++ File respectively.

Now, the Header file(.h file) are there for declaration while the .cpp file are there for the Implementation

Here are the separate .h and .cpp file from the code given :-

1. gradebook.h file :

#ifndef _gradebook_H
#define _gradebook_H

#include <iostream>
#include <stdio.h>
#include <string>

class Gradebook {

public :
int homework[5] = {-1, -1, -1, -1, -1};
int quiz[5] = {-1, -1, -1, -1, -1};
int exam[3] = {-1, -1, -1};
string name;

int printMenu();

string addStudent();

int changeGrade();

};
#endif

2. gradebook.cpp file :

#include <gradebook.h>

using namespace std;

int Gradebook::printMenu() {
int selection;
cout << "-=| MAIN MENU |=-" << endl;
cout << "1. Add a student" << endl;
cout << "2. Remove a student" << endl;
cout << "3. Change a student's grade" << endl;
cout << "4. Change group weights" << endl;
cout << "5. Change the gradebook name" << endl;
cout << "6. Display class averages" << endl;
cout << "7. Display full report" << endl;
cout << "0. QUIT\n" << endl;
cout << "Enter an action: ";
cin >> selection;
cout << endl;
return selection;
}

string Gradebook::addStudent() {
string firstName, lastName, stuName;
cout << "-=| ADDING STUDENT |=-" << endl;
cout << "Please enter the student's name (first and last name): ";
cin >> firstName >> lastName;
firstName[0] = toupper(firstName[0]);
lastName[0] = toupper(lastName[0]);
stuName = firstName + " " + lastName;
return stuName;
}

int Gradebook::changeGrade() {
int num;
cout << "-=| CHANGING GRADE |=-" << endl;
cout << "1. Change a homework grade" << endl;
cout << "2. Change a quiz grade" << endl;
cout << "3. Change a exam grade\n" << endl;
cout << "What type of grade would you like to change: ";
cin >> num;
return num;
}

I hope that answer helped if it was helpful please do give a like and comment if any further help is required.

Thank you!