/*
    Assume we want to create a program that will iterate through a set of grades 
entered by the user and then will average these grades, find the high and low 
grades, <and find the median>.   The program will need to sum up all the grades 
that are entered using a variable totalGrades and will need to count how many 
grades the user enters with a variable countGrades.  The input variable for the 
grades should be called nextGrade and should be initialized to 0.  
    Your program should have a loop to allow the user to enter grades until 
nextGrade is -1.  In the loop your program should start by asking the user to 
enter an integer grade between 0 and 100 or to enter -1 if they are finished 
entering grades.  The program then reads the grade and assigns it to nextGrade.  
If nextGrade is between 0 and 100, then it is added to totalGrades and 
countGrades is incremented.  In the loop you should also check for the highest, 
lowest, <and median values>.  Then the loop test is checked again.
     When the loop test fails, print out a message stating the number of grades 
that were entered and print the average of all the grades, the highest, lowest, 
<and median grade>. 
 */
package lab3part4;

import java.util.Scanner;

/**
 *
 * @author jcmtiernan
 */
public class Lab3Part4
{

    /**
     * @param args the command line arguments
     * 67, 89, 99, 93, 88, 74, 90, 92, 45, 78, 89, 85, 95, 96, -1
     */
    public static void main(String[] args)
    {
        double totalGrades = 0;
        double nextGrade = 0;
        int countGrades = 0;
        double averageGrade = 0;
        double highest = -1;
        double lowest = 101;
        Scanner input = new Scanner(System.in);
        
        while (nextGrade != -1)
        {
            System.out.print("Please enter an integer grade between 0 and 100\n or"+
                " to enter -1 if they are finished entering grades: ");            
            nextGrade = input.nextDouble();
            /*
            If nextGrade is between 0 and 100, 
            then it is added to totalGrades and 
                countGrades is incremented. 
            */ 
            if ((nextGrade >= 0.0)&&(nextGrade <= 100.0))
            {
                totalGrades += nextGrade;
                countGrades++;

                
                highest = newMax(nextGrade, highest);
                lowest = newMin(nextGrade, lowest);

            }
        }
        averageGrade = totalGrades/countGrades;
        System.out.println();    
        System.out.printf("You entered %d grades with the average of %6.2f. \n", 
                countGrades, averageGrade);
        System.out.printf("The highest grade was %6.2f and the lowest was %6.2f.", 
                highest, lowest);
        
        /*  System.out.print("You entered "+countGrades+" grades with the average of "+
                averageGrade+". \nThe highest grade was "+highest+
                " and the lowest was "+lowest+".");  */
    }
    public static double newMax(double possible, double currMax)
    {
        if ( possible > currMax)
        {
            return possible;
        }
        return currMax;
    }
    public static double newMin(double poss, double currMin)        
    {
        if( poss < currMin)
        {
            return poss;
        }
        return currMin;
    }
            
    
    
}