Your job is to implement two member functions in "student.h": addGrade(grade) and GPA( )

A main( ) program is provided that creates student objects and tests the various member functions. The program starts by creating 3 test students: pooja, drago, and sam. Here's the correct output:

pooja (12345): gpa is 2.75 drago (88425): gpa is 0 sam (99999): gpa is 2.2

main.cpp is a read only file

#include #include

#include "student.h"

using namespace std;

// // testcases // // A couple hard-coded test cases to start. // void testcases() { student pooja("pooja", 12345); pooja.addGrade('A'); pooja.addGrade('B'); pooja.addGrade('A'); pooja.addGrade('F');

cout << pooja.getName() << " (" << pooja.getUIN() << "):" << " gpa is " << pooja.GPA() << endl;

student drago("drago", 88425);

cout << drago.getName() << " (" << drago.getUIN() << "):" << " gpa is " << drago.GPA() << endl;

student grow("grow", 99999); char* originalArray = grow.Grades; grow.addGrade('A'); grow.addGrade('B'); grow.addGrade('A'); grow.addGrade('F'); grow.addGrade('W');

cout << grow.getName() << " (" << grow.getUIN() << "):" << " gpa is " << grow.GPA() << endl;

if (grow.Grades == originalArray) cout << "**Error: addGrade did not properly grow the Grades array?!" << endl; if (grow.N != 5) cout << "**Error: addGrade did not properly increase N?!" << endl; if (grow.ArrayCap != 8) cout << "**Error: addGrade did not properly increase Capacity?!" << endl;

cout << endl; }

// ############################################################## // // main // int main() { string name; int uin; char grade; int count = 0; int cap = 4;

testcases();

cout << "Enter a student's name (one word)> "; cin >> name; cout << "Enter their UIN> "; cin >> uin;

student S(name, uin);

char* originalArray = S.Grades;

cout << "Now enter 0 or more grades, one at a time" << endl; cout << "grade or #> "; cin >> grade;

while (grade != '#') { if (count == cap) originalArray = S.Grades;

S.addGrade(grade); count++;

if (count == (cap+1)) cap = cap * 2;

cout << "grade or #> "; cin >> grade; }

cout << endl;

cout << S.getName() << " (" << S.getUIN() << "):" << " gpa is " << S.GPA() << endl;

// // test that array grew properly if need be: // if (cap > 4) // array had to grow: { if (S.Grades == originalArray) cout << "**Error: addGrade did not properly grow the Grades array?!" << endl; } if (S.N != count) cout << "**Error: addGrade did not properly increase N?!" << endl; if (S.ArrayCap != cap) cout << "**Error: addGrade did not properly increase Capacity?!" << endl;

cout << endl; return 0; }

/*student.h*/

// // student class for keeping track of grades. Uses a dynamically // allocated character array for storing grades. //

#pragma once

#include #include #include

using namespace std;

class student { private: string Name; int UIN; //char* Grades; // C-style array of characters //int N; // # of grades in array //int ArrayCap; // total capacity of array

public: // // NOTE: Grades is public *only* for grading purposes, normally // this would be private. Likewise for N and ArrayCap. // char* Grades; // C-style array of characters int N; // # of grades in array int ArrayCap; // total capacity of array

// // constructor: // student(string name, int uin) { Name = name; UIN = uin;

Grades = new char[4]; // empty array of capacity 4: N = 0; ArrayCap = 4; }

// // addGrade: // // Adds another grade to the Grades array, growing dynamically if // necessary (by doubling the capacity). // void addGrade(char grade) { if (N == ArrayCap) // array is full, have to double in size: { // // TODO: // }

// we have space, add to end: Grades[N] = grade; N++; }

// // GPA: // // returns GPA for this student, based on their grades. Returns 0.0 // if the student has no grades. // double GPA() { // // TODO: // return -1; }

// // getName // string getName() { return Name; }

// // getUIN // int getUIN() { return UIN; }

};