//  demo.cpp

//  Compile with: $ g++ -Wall -std=c++11 -o demo demo.cpp
//  Run with: $ ./demo

#include <iostream>
#include <iomanip>
#include <vector>

using namespace std;


class Student {

    vector<string> _Courses;
    string _name;

public:

    Student(string name) : _name(name) {}


    void addCourse(string name) {
        _Courses.push_back(name);
    }


    int getNumberOfCourses() {
        return _Courses.size();
    }


    string getName() {
        return _name;
    }


    void printTranscript() {
        cout << _name << "'s Transcript" << endl;
        cout << "Number of courses: " << _Courses.size() << endl;
        cout << "Courses: ";

        for (string &courseName : _Courses) {
            cout << courseName << " ";
        }

        cout << endl << endl;
    }
};



class University {

    vector<Student> _Students;

public:

    Student & addStudent(string name) {

        // Add the student to the end of the vector.
        _Students.push_back(Student(name));

        // Return the Student object just added to the vector as a reference.
        return _Students.back();
    }


    void printRegistrar() {

        cout << "University Registrar" << endl;
        cout << left << setw(10) << "Name" << setw(10) << "Courses" << endl;

        for (Student & student : _Students) {
            cout << setw(10) << student.getName() << setw(10) << student.getNumberOfCourses() << endl;
        }
    }
};



int main(int argc, char** argv) {

    // Create a new university called UHD.
    University UHD;

    // Add 4 students to UHD.
    UHD.addStudent("Jim");
    UHD.addStudent("Bill");
    Student Bob = UHD.addStudent("Bob");
    UHD.addStudent("Greg");

    // Add 3 classes for Bob
    Bob.addCourse("WRTG140");
    Bob.addCourse("MATH009");
    Bob.addCourse("BIOL101");


    // Shows Bob correctly has 3 classes.
    Bob.printTranscript();

    // BUG: Shows Bob incorrectly has 0 classes.
    UHD.printRegistrar();

    return 0;
}