3.1 The interface for the student class discussed in class is expanded with additional member and non-member functions and the code is provided below:

class student

{

public:

student();

// default constructor

// Postcondition: The newly declared object is initialized according to the code of the constructor.

student(string nm, int nc, double gpa);

// 2nd constructor

// Postcondition: The data members of the newly declared object are initialized with the values passed to the function

string getName();

// An accessor function

// Postcondition: to be filled in by you

double getGPA();

// Another accessor function

// Postcondition: to be filled in by you

void inputOneStuRec();

// The function prompts the user to enter name, total credits, and GPA for a student

// Postcondition: date members of the calling object are loaded with values entered by the user

void setStuRec(string nm, int nc, double gpa);

// Postcondition: to be filled in by you

void displayOneStuRec();

// Postcondition: to be filled in by you

private:

string name;

int tCredits;

double GPA;

};

int fillArray(student s[], int size)

{

int n; // used to store the actual number of student records entered by the user

cout

cin >> n;

cout

for (int i = 0; i

{

cout

s[i].inputOneStuRec();

}

cout

return n;

}

// ******************************

// Prototype of non-member function

int fillArray(student s[], int size);

// An external function, i.e., it is not a member function of the student class!

// Postcondition: 1) returns n, which is the actual number of student record entered by the user

// 2) array is loaded with n sets of values entered the user

void displayStuRecs(student s[], int n);

// A non-member external function. It calls a public member function displayOneStuRec() to get the job done

// Postcondition: The first n student records/objects stored in s array passed to the function are displayed

void sortStuRecsByName(student s[], int n);

// A non-member external function.

// Postcondition: The first n student records/objects stored in the s array are sorted by name alphabetically

void sortStuRecsByGPA(student s[], int n);

// Postcondition: The first n student records/objects stored in the s array are sorted by GPA in descending order

void swap(student &s1, student &s2);

// s1 and s2 must be declared as reference parameters. When the function gets called, s1 and s2 refer back to the two student objects or

// records declared and defined in the calling function

// Postcondition: Two student objects (declared and defined in the calling function) that are referenced by s1 and s2 are swapped

// *******************************

You are asked to

1) Implement all member and non-member functions

2) Write a main() function that makes use of the student class above to generate an output similar to the following sample display.

You may enter up to 30 student records. How many? 3 s[0] Enter student's first name, total credits, and GPA: John 22 3.15 s[1] Enter student s first name, total credits, and GPA: Jane 45 3.68 s[2]: Enter student's first name, total credits, and GPA: Adam 78 3.47 List of 3 students before sorting Name: John GPA: 3.15 Name: Jane GPA: 3.68 Name: Adam GPA: 3.47 Credits: 22 Credits: 45 Credits: 78 We are now sorting the student list by name After sorting, the list becomes: Name: Adam GPA: 3.47 Name: Jane GPA: 3.68 Name: John GPA: 3.15 Credits: 78 Credits: 45 Credits: 22 We are now sorting the student list by GPA After sorting, the list becomes Name: Jane GPA: 3.68 Name: Adam GPA: 3.47 Name: John GPA: 3.15 Credits: 45 Credits: 78 Credits: 22