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: $3\mathrm{.}5)$

Brenda Stern $($GPA: $2\mathrm{.}1)$

Jane Flynn $($GPA: $3\mathrm{.}9)$

Lynda Robison $($GPA: $3\mathrm{.}2)$

Students: $4$