#include <iostream>
#include <iomanip>
#include <cstring>
#include <cmath>

using namespace std;

int main() {
    int grade[4];
    int temp;
    bool more_students;
    char choice, name, lgrade;
    int totstudents;
// Check to see if there are any students.
    cout << " Are there any students? <Y> or <N> \n";
    cin >> choice;
    more_students = (choice == 'Y' || choice == 'y');
    cout << " Enter Last and First name : ";
    cin >> name;

// Enter and Calculate grade.
    for( int g=0; g<4; g++){
        cout << " Enter grade: " << g + 1 << endl;
        cin >> grade[g];
    }
// Find the average.
    int sum = 0;
    double average;
    for( int k=0; k<4; k++) {
        sum += grade[k];
    }

    average = sum / 4.0;

    for( int i=1; i<4; i++) {
        for( int m=0; m<4-i; m++) {
            if( grade[m] > grade[m+1] ) {
                temp       = grade[m];
                grade[m]   = grade[m+1];
                grade[m+1] = temp;
            }
        }

    if(( average <= 100) && ( average >= 0)) {
        if(average >= 90) {
            lgrade = 'A';
        } else if(average >= 80) {
            lgrade = 'B';
        } else if(average >= 70) {
            lgrade = 'C';
        } else if(average >= 65) {
            lgrade = 'D';
        } else {
            lgrade = 'F';
        }
        return lgrade;
        }

    cout << " Are there any more students? <Y> or <N> \n";
    cin >> choice;
    more_students = (choice == 'Y' || choice == 'y');
    more_students = more_students + 1;
    totstudents += more_students;
    for( int h=0; h<4; h++) {
        cout << name << setw(5) << grade[h] << setw(5)
             << average << setw(5) << lgrade;
    }
    cout << " There were " << totstudents << " students processed \n";

    system("pause");
    return 0;
}

return lgrade;

    more_students = (choice == 'Y' || choice == 'y');
    more_students = more_students + 1;