3 replies to this topic

[Silence]

import javax.swing.JOptionPane;

public class OMG {
		
	public static void main(String[] args) {
 		int num=1;
 		char option='Y';
 		
 		while ((option=='Y')||(option=='y')){
 			if (num==1){
 				
 				JOptionPane.showMessageDialog(null, "Count: "+num);
 				String ops=JOptionPane.showInputDialog("Do you want to count again? Y/N?");
 				option=ops.charAt(0);
 				num++;
 			}
 			else {
 				JOptionPane.showMessageDialog(null, "Count: "+num);
 				String ops=JOptionPane.showInputDialog("Do you want to count again? Y/N?");
 				option=ops.charAt(0);
 				num++;
 				
 				
 			}
 	
 		} 	
 			JOptionPane.showMessageDialog(null, "Final Count "+num);
	}
}

What you see above is a Java Program that will ask if the User wants to Count, if the user inputs either a Yes Answer ('Y' or a 'y'), the integer "x" will increment, but when I input a NO answer ('N' or a 'n') the program should output the Final Count or the Last number. But the problem is when I put a NO answer the program still increment Once and output a wrong answer. For Example the Last number is 5, but the Output will become 6.

Please Help

[Slightly Wonky Robob]

Well, I don't know Java, but from the look of things it's because you increment 'num' after you you ask the question, so regardless of what the answer it's gonna get increased. So I would say you either need to check the answer before increasing, or simply increase the number before you ask the question (and as a result num would need to start at 0, not 1)

Edited by Bob, 02 August 2009 - 23:01.

[Dauth]

Silence, on 2 Aug 2009, 23:29, said:

import javax.swing.JOptionPane;
 
 public class OMG {
		 
	 public static void main(String[] args) {
		  int num=1;
		  char option='Y';
		  
		  while ((option=='Y')||(option=='y')){
			  if (num==1){
				  
				  JOptionPane.showMessageDialog(null, "Count: "+num);
				  String ops=JOptionPane.showInputDialog("Do you want to count again? Y/N?");
				  option=ops.charAt(0);
  comment out me				 num++;
			  }
			  else {
				  JOptionPane.showMessageDialog(null, "Count: "+num);
				  String ops=JOptionPane.showInputDialog("Do you want to count again? Y/N?");
				  option=ops.charAt(0);
				  num++;
				  
				  
			  }
	  
		  }	 
			  JOptionPane.showMessageDialog(null, "Final Count "+num);
	 }
 }

What you see above is a Java Program that will ask if the User wants to Count, if the user inputs either a Yes Answer ('Y' or a 'y'), the integer "x" will increment, but when I input a NO answer ('N' or a 'n') the program should output the Final Count or the Last number. But the problem is when I put a NO answer the program still increment Once and output a wrong answer. For Example the Last number is 5, but the Output will become 6.

Please Help

Put something in to show you where Bob means.

[jnengland77]

As Bob and Dauth pointed out you increment num no matter whether num is equal to 1 or not.

To make the code more readable, shorter, and less code duplication, I would suggest the following code:

import javax.swing.JOptionPane;

public class OMG {
		
	public static void main(String[] args) {
 		int num=1;
 		char option='Y';
 		
 		while ((option=='Y')||(option=='y')){
 			JOptionPane.showMessageDialog(null, "Count: "+num);
 			String ops=JOptionPane.showInputDialog("Do you want to count again? Y/N?");
 			option=ops.charAt(0);
 		
			if (num != 1){
 				num++;
 			}
 		}
 	
 	} 	
 		JOptionPane.showMessageDialog(null, "Final Count "+num);
}

~jnengland77
P.S. Ewww it's Java...

Edited by jnengland77, 03 August 2009 - 06:37.