CSC5HELPPLEASE

/*****************************************************************
 * AUTHOR        : Joseph De Ruyter
 * ASSIGNMENT #1 : Basic Input / Output
 * CLASS         : CSC5
 * SECTION       : MW 2:20p - 5:30p
 * DUE DATE      : 9/18/2019
 ****************************************************************/

#include <iostream>
#include <iomanip>
using namespace std;

/****************************************************************
 * COMPUTE GPA
 * ______________________________________________________________
 * This program takes user inputed grades and converts them
 * to an integer, 0 through 4, based on the grade. The program
 * then calculates the grade point average based on the amount
 * of grades submitted. If no grades are submitted, nothing
 * will output.
 *
 * ______________________________________________________________
 * INPUT
 *   Grade           : Users grade
 *   X               : Sentinel value to stop the program
 *   x               : Sentinel value to stop the program
 *
 * OUTPUT
 *   totalGrade      : Total number of grade points
 *   gpa             : Grade point average of all grades
 *
 *
 ****************************************************************/
int main()
{
    // Declare constants
    const float A = 4;
    const float B = 3;
    const float C = 2;
    const float D = 1;
    // Declare variables
    int count;
    char grade;
    int totalGrade;
    float gpa;
    float numberOfGrades;

    // Display header
            cout << "***********************************************" << endl;
            cout << "* PROGRAMMED BY : Joseph De Ruyter"              << endl;
            cout << "* CLASS    : CSC5"                               << endl;
            cout << "* SECTION  : MW 2:20p-5:30p"                     << endl;
            cout << "* PROJECT #2    : Repetition & Switch Statement" << endl;
            cout << "***********************************************" << endl;
            cout << endl;
    // For loop (repeat 3 times)
    for (count = 1; count <= 3; count++)
    {
            // Reset variables for loop
            totalGrade = 0;
            numberOfGrades = 0;
            // Output test header
            cout << "Test # " << count << ":" << endl << endl;
            cout << "\tEnter Letter Grade(enter 'X' to exit): ";
            cin >> grade;
        // While loop (continue until sentinel value)
        while(grade != 'x' && grade != 'X')
        {
            // Statement to assign grades a value
            switch (grade)
            {
                case 'A':
                case 'a': totalGrade += A; numberOfGrades += 1;
                    break;
                case 'B':
                case 'b': totalGrade += B; numberOfGrades += 1;
                    break;
                case 'C':
                case 'c': totalGrade += C; numberOfGrades += 1;
                    break;
                case 'D':
                case 'd': totalGrade += D; numberOfGrades += 1;
                    break;
                case 'F':
                case 'f': numberOfGrades += 1;
                    break;
                default: cout << "\n\tInvalid letter grade, "
                                 "please try again\n" << endl;
            }
            // Ask for another grade
            cout << "\tEnter Letter Grade(enter 'X' to exit): ";
            cin >> grade;
        }
        // Declare grade point average (gpa)
        gpa = (totalGrade/numberOfGrades);
        // If statement to check division by zero (no grades)
        if (numberOfGrades > 0)
        {
            cout << "\nTotal Grade Points: " << totalGrade << endl;
            cout << "GPA: " << setprecision(2) << fixed << gpa;
            cout << endl << endl << endl;
        }
    }
    return 0;
}