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To begin, go ahead and select the Debug Odd or Even exercise.

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All right. So now that you

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have learned all about the tips and tricks and the steps to go through

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to debug your code,

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it's time to put some of that into action. In the upcoming three lessons,

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I've got a bunch of code that you've already written before.

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The first one, for example,

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is the Odd or Even code challenge that you did a long time ago.

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Now, the important thing is for you to not just go back to the old code,

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copy it, paste it in, submit, done. That isn't going to teach you anything.

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There's no point doing this if you're not going to learn. But instead,

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what I want you to do is to look at the code, see what it meant to do.

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So for example, in this case,

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we're trying to input a number and then we're trying to get our code to check

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to see if it's an odd number or an even number, and then print it out. Now,

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in most of these upcoming code exercises, they're going to be broken,

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but it's your job to try and fix it

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to make sure that it does what it's supposed to. In this case,

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you should be able to type in a number and it should print,

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"This is an even number." if it's even, "This is an odd number." if it's odd.

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Once you've spotted the problem and debugged and fixed your code,

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then I'll go through the solution with you. So pause the video now.

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All right. So,

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as always, let's first hit run to see if it actually works or not.

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And in this case, it doesn't even run. It gives us a syntax error straightaway,

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and it tells us that on line three, we've got some invalid syntax. Now,

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on line three, that's actually not all that specific.

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But notice how sometimes when you get errors,

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it's actually nice enough to have a little arrow pointing towards the bit of the

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code in that line that it thinks is problematic.

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So let's try and fix this error before we proceed.

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So why does it have an issue with this equal sign? Well,

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remember that two equal signs is checking and one equal sign is assignment.

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So in this case,

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we're actually saying number % 2 should be equal to zero,

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which is nonsense. It doesn't actually make any sense. Instead,

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what we wanted was two equal signs so that we can check that the left-hand side

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is equal to the right-hand side.

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And now if we hit run and we enter a number, it should now work.

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Did you manage to get it right?

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If not, be sure to review some of the lessons on debugging and try to apply it in

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the next exercise. So once you're ready, head over to the next lesson.