Make while loop re-ask for input from user

Question

So in this section of my program I'm trying to make the program re-ask for input from the user.

The problem is that is says the int have already been declared. But how do I get the input for the question again?

Scanner keyboard = new Scanner(System.in);

System.out.println("Please enter possible and actual points for participation: ");
int pparticipation = keyboard.nextInt();
int aparticipation = keyboard.nextInt();

while (aparticipation > pparticipation || pparticipation < 0){
   System.out.println("Please enter possible and actual points for participation: ");
   int pparticipation = keyboard.nextInt();
   int aparticipation = keyboard.nextInt();
}

timonsku · Accepted Answer · 2013-03-02 02:10:20Z

2

You declared the variables twice. Removing the "int" from the variables in the loop should get it working.

int aparticipation; that is declaring a variable. To assign a value to the variable after that you just do aparticipation = keyboard.nextInt();

You already declared it so you dont have to tell the compiler that its an int again.

answered Mar 2, 2013 at 2:10

timonsku

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1 Comment

Lucas Clarke Over a year ago

Wow stupid mistake. Thanks for pointing it out, that did the trick!

knoight · Accepted Answer · 2013-03-02 02:11:30Z

1

The error is occurring because you are trying to declare pparticipation and aparticipation again within the loop. Remove the type (int) from in front of those two variables.

answered Mar 2, 2013 at 2:11

knoight

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Comments

tmwanik · Accepted Answer · 2013-03-02 02:18:39Z

0

All you have to do is to change the following :-

while (aparticipation > pparticipation || pparticipation < 0){
   System.out.println("Please enter possible and actual points for participation: ");
   int pparticipation = keyboard.nextInt();
   int aparticipation = keyboard.nextInt();
}

to

while (aparticipation > pparticipation || pparticipation < 0){
   System.out.println("Please enter possible and actual points for participation: ");
   pparticipation = keyboard.nextInt();
   aparticipation = keyboard.nextInt();
}

The variables are already declared, so don't do it again.

answered Mar 2, 2013 at 2:18

tmwanik

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