[maatghandi]

Nevermind...here's what I got:

#include <iostream>
using namespace std;

int main () {

    int countA = 0;
    int countB = 0;
    int countC = 0;
    int countD = 0;
    int countF = 0;
    double score = 0.0;
    int numberOfAs = 0;
    int numberOfBs = 0;
    int numberOfCs = 0;
    int numberOfDs = 0;
    int numberOfFs = 0;

    cout << "Number of A's: " << numberOfAs <<endl;
    cout << "Number of B's: " << numberOfBs <<endl;
    cout << "Number of C's: " << numberOfCs <<endl;
    cout << "Number of D's: " << numberOfDs <<endl;
    cout << "Number of F's: " << numberOfFs <<endl;
    cout << "Enter a score (%) or -1 to end: ";
    cin >> score;

    if (score != -1) {
        while (score != -1) {
            if (score >= 90) {
                numberOfAs++;
            }
            if (score >= 80 && score < 90) {
                numberOfBs++;
            }
            if (score >= 70 && score < 80) {
                numberOfCs++;
            }
            if (score >= 60 && score < 70) {
                numberOfDs++;
            }
            if (score >= 0 && score < 60) {
                numberOfFs++;
            }

            cout << "Number of A's: " << numberOfAs <<endl;
            cout << "Number of B's: " << numberOfBs <<endl;
            cout << "Number of C's: " << numberOfCs <<endl;
            cout << "Number of D's: " << numberOfDs <<endl;
            cout << "Number of F's: " << numberOfFs <<endl;

            cout << "Enter a score (%) or -1 to end: ";
            cin >> score;
        }

    }
    cout << endl;
    cout << "A's: ";
    while (countA < numberOfAs) {
        cout << "*";
        countA++;
    }
    cout << endl;
    cout << "B's: ";
    while (countB < numberOfBs) {
        cout << "*";
        countB++;
    }
    cout << endl;
    cout << "C's: ";
    while (countC < numberOfCs) {
        cout << "*";
        countC++;
    }
    cout << endl;
    cout << "D's: ";
    while (countD < numberOfDs) {
        cout << "*";
        countD++;
    }
    cout << endl;
    cout << "F's: ";
    while (countF < numberOfFs) {
        cout << "*";
        countF++;
    }
    cout << endl;
return 0;
}

Any suggestions on simplifying it? I'm not familiar enough with functions yet to be comfortable with them, but if anyone has suggestions, that would be appreciated!

Maat