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Alright so let's go over the challenge
that I introduced at the end of the

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previous video. If you recall, the
challenge was to rewrite the program so

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that it tests for a correct guess first.
So to do that we need to start by

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changing line six. At the moment it's
checking the guess is not equal

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to answer, so we need to change the not equal to become equal to. So we're now checking,

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specifically, if guess is equal to
answer, then we're going to change that

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if it is. Then I come down here and take
a copy of this code, and I'm going to

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paste it under, we indent it on line 7.
So if guess is equal to answer, we're

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printing out the message "You've got it
first time", and the code here is going to

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remain the same, if guess is less than answer. I'm just going through the process of checking.

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In fact, I should really have
just cut that out altogether because I

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copied it, but that line is no longer
needed anymore. So I'm going to delete

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that, and we're doing that for the
scenario where they haven't got the

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answer right. So what we need to do is
remove this else altogether, and we need

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to come down here, after line 7, and
go back to the first indentation level

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and put an else colon there. And again,
what's happening here if guess is

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not equal to answer, then the else
clause gets executed and the code

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starting from line 9 will then go
through and get executed. And obviously,

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in the case of the guess equaling the
answer, which is the comparison on line

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6, if that's the case, only line 7
is going to be executed. So this is

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a third way to write the program and it
still does exactly the same thing.

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It's just phrased differently, just like you
can do with human languages.

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So here we're checking for a correct guess first.
Now it doesn't really matter which way

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round you do it. There's no necessarily
correct way of doing it.

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We're looking for the result here or for the solution, so if you manage to get the solution, congratulations.

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So let's just confirm we've
got this right. We'll just do a quick test.

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And firstly, I'll test to see whether
the number is correct, works,

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"You got it right first time" which is good. Lets do a
test where it's 1, "Please guess higher".

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We'll do 9. You can see that code has
been executed,

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and we'll do a test where we're starting off with a
high value, 9, "Please get lower", 1,

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"You have not guessed correctly". We'll just do one
more scenario, start with 1 again,

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we'll do 5. So clearly the code is still
working. Alright, so do make sure you

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test the programme as I've done, even
though I haven't done a complete test,

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and in the next video we're going to
start looking at more complex conditions.

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See you in the next video.