Sum Of Numbers

Posted on 2009-07-01
Last Modified: 2013-12-14
Im trying to write a program that asks the user for a positive nonzero integer value. The program should use a loop to get the sum of all the integers from 1 up to the number entered. For example, if the user entered a 50, the loop will find the sum of 1,2,3,4,....50.

i think the code i posted may be wrong but ive spent hours trying to figure it out and my teacher isnt helpful at all. :(

i really would appreciate it if a full solution code is posted. This will help me study for my other programs im having trouble with.
public class SumOfNumbers
        public static void main( String [] args)
            double nonZero;
            double numbers;
            double totalNumbers;
            String input;
            for( int count = 1; count <= nonZero; count++ )
                input = JOptionPane.showInputDialog(null, "Please enter a nonzero positive integer.");
              nonZero = Double.parseDouble(input);
            JOptionPane.showMessageDialog(null, "The sum of the integers is: " + nonZero);

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Question by:AgentC4

Accepted Solution

Opalelement earned 500 total points
ID: 24760313
Not sure if this will work since I don't have a java environment to test in ATM, but it has comments so you can see what it is supposed to do.
public class SumOfNumbers
        public static void main( String [] args)
            double number; // The entered number after it is parsed
            double totalNumber = 0; // Total after adding
            String input; // Input from the input dialog
            input = JOptionPane.showInputDialog(null, "Please enter a nonzero positive integer."); // Ask for the number
            number = Double.parseDouble(input); // change it to a number
            for( int count = 1; count <= number; count++ )
              totalNumber += count; // Loop through and keep adding the numbers
            JOptionPane.showMessageDialog(null, "The sum of the integers is: " + totalNumber); // Show the final

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Author Closing Comment

ID: 31599057
You're a life saver, thank you so much yes this works perfectly. ill definitely study it and work more and do examples.

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