P5.1 Given the following student class interface, a) implement all member functions of the class, b) implement all non-member external functions of the class, and c) write a main() function to generate an output similar to the sample output appeared after the class interface. Notice that not all pre- and post-conditions for functions are provided; some are intentionally left out for you to fill in.

class student

{

public:

student();

student(string, int, double);

void inputStuRec();

// prompts the user to enter name (for simplicity, last name only), credits completed and GPA

// Postcondition: Data mambers of the calling object is filled with values entered by the user

void outputStuRec();

// Postcondition: contents of the calling object is displayed in a format shown in the sample output

void setName(string& str);

// "Mutator" or "mutator function"

// Postcondition: data member name of the calling object has been set to str

void setCredits(int);

void setGPA(double);

void setStuRec(string, int, double);

bool comapreName(student& obj2);

// Name of the calling object is comapare to that of obj2

// Postcondition: if calling object > obj2, returns true; otherwise, return false

bool compareGPA(student& obj2);

// GPA of the calling object is comapare to that of obj2

// Postcondition: if calling object > obj2, returns true; otherwise, return false

void swap(student& obj2);

// Postcondition: contents of the calling object and obj2 are swapped

private:

string name; // Last name only

int credits;

double GPA;

};

// **** External functions ****

int fillStuArray(student[], int size);

// prompt the user to enter up to size (the capacity of the array) student records

// Postcondition: student array has been filled with n records with values entered by the user, where n <= size; the value of n is returned

void sortStuArrayByName(student[], int n);

// Postcondition: student array has been sorted by student name in alphabetical order

void displayStuReport(student[], int n);

// Postcondition: n student records stored in the student array are displayed