Thread: Java Help...

I need to create a method which totals a series of positive integers which the user enters from the keyboard. The user will type in each value followed by an <Enter> keypress. After the last value the user will type a negative value: this is the terminal sentinel.

So far, the code which I have in the class Looping:

 public static void main(String[] args){
          int count =0;
          int sum= 1;
          do
          { 
              System.out.println(+ count + sum);      
              count++;
              sum += count;
            }while(count <=4);
        }
    }

import java.util.Scanner;
 
 
/**
 * InputReader reads typed text input from the standard text terminal. 
 
 */
public class InputReader
{
    private Scanner reader;
 
    /**
     * Create a new InputReader that reads text from the text terminal.
     */
    public InputReader()
    {
        reader = new Scanner(System.in);
    }
 
    /**
     * Accesses a String typed in text terminal
     * 
     * @returns String value input
     */
    public String getString()
    {
        String input = reader.nextLine();
        return input;
    }
 
    /**
     * Accesses a int typed on a single line in text terminal
     * 
     * @returns int value input
     */
    public int getInt()
    {
        int input = reader.nextInt();
        reader.nextLine();
        return input;
    }
 
}

You're really almost there, aren't you? I don't understand what the problem is. You have all the code written... now you just have to put it together.

ReadAndSum()
1. sum := 0
2. input := 0
3. while input >= 0
4.    do Display("The nth partial sum is ", sum) ! this is optional
5.    sum := sum + input
6.    input := ReadInteger()
7. Display("The sum is ", sum)

The translation from pseudocode is pretty straightforward... you already know how to Display(...) and ReadInteger().

One thing: you need to be careful about how you're printing out the count and sum. Try this...

System.out.println("(count, sum) =  (" + count + ", " + sum+ ")");