Jordan Grimes

Ok thanks. That makes since. Think I got it now.

Ok, i believe I have fixed the Grade Checking issue...and my integers are now display numbers but the while loop runs indefinitely.

import java.util.Scanner; /*Write a program that prompts the user to enter the total number of students first. *Then ask the user to input each student’s grade and use loop statements to read in each grade. *Check input grade to make sure 0<=grade<=100, if the user input any other number, print out *warning message and ask the user to input a new grade. Display the highest score, *the lowest score and the average. */ public class LoopStatements { // Main Method public static void main(String[] args) { // Initialize int grade = 0; // grade value int numberofstudents = 0; // total number of students to be inputed int numberofgrades = 0; // number of grades for student being entered float total = 0; // sum of grades // Create Scanner Scanner input = new Scanner(System.in); // Prompt user to input total number of Students. System.out.println("Please enter the total number of Students: "); numberofstudents = input.nextInt(); //Set loop continuation to run for numberofstudents being entered. for (int i = 0; i < numberofstudents; i++) { // Prompt user to enter student grades. System.out.println("Please enter number of grades for Student: "); //Set loop continuation to run for numberofgrades to be entered for that student. for (int j=0; j < numberofgrades; j++) { //Prompt user to enter a grade. System.out.println("Please enter Students' grade:"); grade = input.nextInt(); //Test to see if grade is valid if (grade < 0 || grade > 100) { System.out.println("Grade must be between 0 and 100.\nPlease enter another grade\n"); } while (grade >= 0 && grade <= 100) { //Initialize int highest = 0; // running highest grade int lowest = 0; // running lowest grade double average = 0; // average of grades //Determine if this is highest grade so far and store for highest if (grade > highest) { highest = grade; } //Determine if this is lowest grade so far and store for lowest if (grade < lowest) { lowest = grade; } total += grade; average = (total/numberofgrades); System.out.println("The highest grade is " + highest); System.out.println("The lowest grade is " + lowest); System.out.println("The average grade is " + average); } } } } }

That is checking to make sure the grade entered is between 0and100. But now that you mention it...that creates an infinite loop. I just entered 101 and I get an infinite loop of the println ().

I have this code running correctly in Eclipse all except that it seems no matter where I declare, highest, lowest, average they always seem to stay at "0".

I have a feeling the location of the Initialization is not the error since I have tried moving it to inside differ loops.

Stipulations on writing this code are:
Note: You do not need to use array to save each input score for this lab. A Single loop to read in each grade, compare with the current highest grade, lowest grade, and
calculate the running sum at the same time.

Yes this is homework and I have dug all through my book and the web trying to figure out where I messed up.

import java.util.Scanner; /*Write a program that prompts the user to enter the total number of students first. *Then ask the user to input each student’s grade and use loop statements to read in each grade. *Check input grade to make sure 0<=grade<=100, if the user input any other number, print out *warning message and ask the user to input a new grade. Display the highest score, *the lowest score and the average. */ public class LoopStatements { // Main Method public static void main(String[] args) { // Initialize int grade = 0; // grade value int numberofstudents = 0; // total number of students to be inputed int numberofgrades = 0; // number of grades for student being entered float total = 0; // sum of grades // Create Scanner Scanner input = new Scanner(System.in); // Prompt user to input total number of Students. System.out.println("Please enter the total number of Students: "); numberofstudents = input.nextInt(); //Set loop continuation to run for numberofstudents being entered. for (int i = 0; i < numberofstudents; i++) { // Prompt user to enter student grades. System.out.println("Please enter number of grades for Student: "); numberofgrades = input.nextInt(); //Set loop continuation to run for numberofgrades to be entered for that student. for (int j=0; j < numberofgrades; j++) { //Prompt user to enter a grade. System.out.println("Please enter Students' grade:"); grade = input.nextInt(); //Initialize int highest = 0; // running highest grade int lowest = 0; // running lowest grade double average = 0; // average of grades //Test to see if grade is valid while (grade < 0 || grade > 100) { System.out.println("Grade must be between 0 and 100.\nPlease enter another grade\n"); //Determine if this is highest grade so far and store for highest if (grade > highest) { highest = grade; } //Determine if this is lowest grade so far and store for lowest if (grade < lowest) { lowest = grade; } total += grade; average = (total/numberofgrades); } System.out.println("The highest grade is " + highest); System.out.println("The lowest grade is " + lowest); System.out.println("The average grade is " + average); } } } }