Exercise07_04.java

package ch_07;

/*7.4 (Analyze scores) Write a program that reads an unspecified number
 *of scores and determines how many scores are above or equal to the average
 *and how many scores are below the average. Enter a negative number to
 *signify the end of the input. Assume that the maximum
 *number of scores is 100.
 */

import java.util.Scanner;

public class Exercise07_04 {
    public static void main(String[] args) {

        Scanner in = new Scanner(System.in);

        double[] scores = new double[100];

        int count = 0;
        double sum = 0;

        System.out.println("Enter a new score (enter a negative number"
                + " to complete program): ");

        for (int i = 0; i < 100; i++) {

            double score = in.nextDouble();

            if (score < 0) break;

            scores[i] = score;

            count++;
            sum += scores[i];

        }

        double average = sum / count;

        int aboveorequal = 0;

        for (int i = 0; i <= count; i++) {
            if (scores[i] >= average) {
                aboveorequal++;
            }
        }

        System.out.println("Count is: " + count);
        System.out.printf("The average is %1.2f \n", average);
        System.out.println("Number of scores above or equal to average is: "
                + aboveorequal);
        System.out.println("Number of scores below the average is:"
                + " " + (count - aboveorequal));
    }

}