COS126

• Download Grades.java

/******************************************************************************
 *  Name:    Kevin Wayne
 *  NetID:   wayne
 *  Precept: P00
 *
 *  Description:  This program reads grade data from standard input and
 *                prints all students whose weighted average is greater than
 *                (or equal to) a threshold value specifed as a command-line
 *                argument.
 ******************************************************************************/

public class Grades {

    public static void main(String[] args) {

        // print only scores above this threshold
        double threshold = Double.parseDouble(args[0]);

        // number of assessments
        int NUMBER_OF_ASSESSMENTS = 6;

        // weights[i] = weight of assessment i
        double[] weights = new double[NUMBER_OF_ASSESSMENTS];
        StdIn.readString();
        for (int i = 0; i < NUMBER_OF_ASSESSMENTS; i++) {
            weights[i] = StdIn.readDouble();
        }

        // maxScore[i] = max score for assessment i
        int[] maxScore = new int[NUMBER_OF_ASSESSMENTS];
        StdIn.readString();
        for (int i = 0; i < NUMBER_OF_ASSESSMENTS; i++) {
            maxScore[i] = StdIn.readInt();
        }

        // compute grade of each student
        while (!StdIn.isEmpty()) {

            // student's name
            String name = StdIn.readString();

            // compute weighted average, as you read in scores
            double weightedAverage = 0.0;
            for (int i = 0; i < NUMBER_OF_ASSESSMENTS; i++) {
                int score = StdIn.readInt();
                weightedAverage += weights[i] * score / maxScore[i];
            }

            // print if above specified threshold
            if (weightedAverage >= threshold)
                StdOut.printf("%7.3f %s\n", weightedAverage, name);
        }
    }
}