i have to work out the question below. i have to use this same format too but having problems figuring out where I'm going wrong. thanks in advance.
/*
Write a program which averages a sequence of percentage
* marks input by the user. The number of values input
will vary from run to run. This will be indicated
by an invalid mark being input.
*/
import javax.swing.JOptionPane;
class Week6_2
{
public static void main(String[]args)
{
int counter = 0;
int mark = 0;
while (mark != -1)
{
String s = JOptionPane.showInputDialog("enter mark or type -1 to exit");
mark = Integer.parseInt(s);
counter = counter+1;
int sum = mark+counter;
int average = sum/counter;
}
JOptionPane.showMessageDialog(null,"average = "+ average);
}
}