Question

Complete Course.cpp by implementing the PrintRoster() function, which outputs a list of all students enrolled in a course and also the total number of students in the course.

Given files: 

• main.cpp - contains the main function for testing the program.

• Course.cpp - represents a course, which contains a vector of Student objects as a course roster. (Type your code in here)

• Course.h - header file for the Course class.

• Student.cpp - represents a classroom student, which has three data members: first name, last name, and GPA.

• Student.h - header file for the Student class.

Ex: If the program has 4 students enrolled in the course, the output looks like: 

Henry Cabot (GPA: 3.5)
Brenda Stern (GPA: 2.1)
Jane Flynn (GPA: 3.9)
Lynda Robison (GPA: 3.2)
Students: 4

Course.cpp
#include "Course.h"
#include "Student.h"
using namespace std;

// TODO: Output each student in the course roster, and then the total size of the course

   
}
void Course::AddStudent(Student s) {
	roster.push_back(s);
}


Course.h
#ifndef COURSE_H_
#define COURSE_H_
#include <iostream>
#include <vector>
#include "Student.h"
using namespace std;
class Course {
   public:
	   void PrintRoster();
//		string GetCode();
		void AddStudent(Student);
   private:
      vector<Student> roster;
};
#endif /* COURSE_H_ */


Main.cpp
#include <iostream>
#include "Course.h"
#include "Student.h"
using namespace std;
int main() {
	Course course = Course();
	course.AddStudent(Student("Henry", "Cabot", 3.5));
	course.AddStudent(Student("Brenda", "Stern", 2.1));
	course.AddStudent(Student("Jane", "Flynn", 3.9));
	course.AddStudent(Student("Lynda", "Robison", 3.2));
	course.PrintRoster();
	return 0;
}


Student.h
#ifndef STUDENT_H_
#define STUDENT_H_
#include <iostream>
using namespace std;
class Student {
    public:
	   Student(string, string, double);
		double GetGPA();
		string GetFirst();
		string GetLast();
    private:
        string first;
        string last;
        double gpa;
};
#endif /* STUDENT_H_ */


Student.cpp
#include "Student.h"
using namespace std;
Student::Student(string f, string l, double g) {
	first = f; // first name
	last = l;  // last name
	gpa = g;   // grade point average
}
double Student::GetGPA() {
	return gpa;
}
string Student::GetFirst() {
	return first;
}
string Student::GetLast() {
	return last;
}

Answer 1

void Course::PrintRoster(){

//traverse the roster vector

for(auto i = roster.begin(); i != roster.end(); i++){

//print firstname, lastname and grade of students

cout<<i->GetFirst()<<" "<<i->GetLast()<<" (GPA: "<<i->GetGPA()<<")"<<endl;

}

//print the total no. of students

cout<<"Students: "<<roster.size()<<endl;

}

#include<iostream>

#include<vector>

using namespace std;

//Student class defination

class Student{

string first;

string last;

double gpa;

public:

Student(string, string, double);

double GetGPA();

string GetFirst();

string GetLast();

};

//Course class defination

class Course{

vector<Student> roster;

public:

void AddStudent(Student);

void PrintRoster();

};

//Student class constructor

Student::Student(string f, string l, double g){

first = f;

last = l;

gpa = g;

}

//getters for Student class

string Student::GetFirst(){

return first;

}

string Student::GetLast(){

return last;

}

double Student::GetGPA(){

return gpa;

}

//Course function for adding students to roster

void Course::AddStudent(Student s){

roster.push_back(s);

}

//print roster

void Course::PrintRoster(){

//traverse the roster vector

for(auto i = roster.begin(); i != roster.end(); i++){

//print firstname, lastname and grade of students

cout<<i->GetFirst()<<" "<<i->GetLast()<<" (GPA: "<<i->GetGPA()<<")"<<endl;

}

//print the total no. of students

cout<<"Students: "<<roster.size()<<endl;

}

//main function

int main(){

Course course = Course();

course.AddStudent(Student("Henry", "Cabot", 3.5));

course.AddStudent(Student("Brenda", "Stern", 2.1));

course.AddStudent(Student("Jane", "Flynn", 3.9));

course.AddStudent(Student("Linda", "Robinson", 3.2));

course.PrintRoster();

return 0;

}