Program that Grades Using Functions

[blazemadej]

I do not think I am understanding the instructions given to me in the first place. The instructions look convoluted and messy to me. My teacher makes no sense and allows no questions.

-Write a program that prompts a user for their grades, finds the average and prints out a letter grade.
-The program calls a function called GetGrades that will read in grades from the keyboard, the number of grades should also be input by the user.
-GetGrades will find the sum of those grades and pass the sum and number of grades to another function called FindAverage.
-FindAverage will find the average of the grades and return this average to GetGrades.
-GetGrades will return this average to main.
-The main function will then determine the letter grade of that average based on a 10-point scale and print out this grade.

-Main should determain the letter grade of an average based on a 10-point scale and print out this grade.

90–100 A
80–89 B
70–79 C
60–69 D
0–59 F

-GetGrades function should get number of grades, read the grades entered, find the sum of those grades and pass the sum and number to FindAverage.
-FindAverage will get the average of the grades and return the average to GetGrades.
-GetGrades will return this average to main.

#include <iostream>
using namespace std;

// Function Prototypes.
int GetGrades(int,int,int);
int FindAverage(int,int);

int main()// Determine letter grade of the average.
{
    int numberOfGrades, letterGrade;
    int totalPoints, average;

    GetGrades(numberOfGrades,numericGrade,average); // Call GetGrades

    while (totalPoints >= 0)
	{
	    if (totalPoints >= 90 && totalPoints ==100) // 90 and above
            letterGrade = 'A';
        else if (totalPoints >= 80 && totalPoints== 100) //80-89
            letterGrade = 'B';
        else if (totalPoints >= 70 && totalPoints== 79) //70-79
            letterGrade = 'C';
        else if (totalPoints >= 60 && totalPoints==69) //60-69
            letterGrade = 'D';
        else if (totalPoints >= 0 && totalPoints== 59) //0-59
            letterGrade = 'F';
            cout << "Total Score: " << totalPoints << endl;
            cout << "Grade: " << letterGrade << endl;
    }
    return 0;
}

int GetGrades(int numberOfGrades,int numericGrade, int average)
{
    // Get number of grades.
    cout << "How many grades would you like to enter? " << endl;
    cin >> numberOfGrades;

    // Read the grades entered by user.
    for (int i = 0;i > numberOfGrades; i++)
    {
        cout << "Please enter a numeric grade: "<< endl;
        cin >> numericGrade;
    }
    // Call Function.
    return FindAverage(numericGrade, numberOfGrades);
    cout << "The average of the numeric grades you entered is: " << average << endl;

}
int FindAverage(int numericGrade,int numberOfGrades)
{
    // Display the average.
    return (numericGrade)/numberOfGrades;
}

[unsensible]

The instructions seem pretty clear and, based on your program, you seem to know what you're doing. Was there a specific problem or error you are receiving?