Hint

How are you doing? If you're struggling to see why, try changing the variable names inside the function so they're different from those outside the function: remember that the names of variables inside a function don't have to be the same, and, indeed, aren't usually, unless we're using global variables.

When you think you've got it (or otherwise), go on to check out the answer...

• Using the debugger
• Extras
• This page
• Answer <-- next