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Hello, everyone. Welcome to the section 19 challenge 2 project.

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In this project, what I'd like you to do is

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write an automated grader.

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Let me explain what that is. We want to write a program that reads a file,

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and this file is called responses.txt which I'm providing for you.

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That file contains the answer key for a quiz that some students have taken

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as well as the responses from the students for that quiz.

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The structure of the file is really simple.

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The first item in the file is the answer key,

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and it's just a simple string with a bunch of letters in it.

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Then you've got student pairs. As far as student response,

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student response and so forth so. Here's a sample file.

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You'll see right here on line 17 is the very first line of the file.

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That's the answer key. So in other words, the correct answers to this quiz are a

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b c and d.

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Now we've got student response pairs here.

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As you can see there are five students here.

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Frank's answers are abcd and e. So Frank got a 5 out of 5.

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Larry got abc a and c. So we only got the abc part right.

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So Larry got a 3 out of 5. Moe got the

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bcde, so he's got a 4 out of 5.

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Curly's got the b and the e, so he's got a 2 out of 5.

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And Michael's got all but the first one, so he's got a 4 out of 5.

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That's it so what you have to do is basically read this file,

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process the data and then display the output.

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The output display is pretty straightforward. You can format it, so it looks nice.

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But it'll look something like this.

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So it'll say student and score. It'll display the student, it'll display the score that they got out of 5.

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And then at the very end, you'll have a little footer that shows the average score, in this case,

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3.6. You can assume that the data file is properly formatted.

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You're always going to have pairs. You're not going to have missing data.

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And you'll always have at least one student in there.

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Okay. So let me give a sample run so you can see what it looks like.

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So there's a sample run given this data right here.

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And as you can see here, I've got the student, the score

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Frank Larry Moe Curly and Michael.

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And there's a score out of 5. And the average in this case is the 3.6.

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So here you'll get a chance to read a file to do some processing.

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And you'll get a chance to use your manipulators to line this up, so it looks nice.

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Let me show you the file itself. It's called responses.txt.

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And there it is. You can add data to this, and test it all you like.

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There is no test case right now with a 0, so you might want to add that as well.

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And that's about it. You can find it in the section 19 workspace,

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in the challenge_2 project.

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There's also a challenge_2_solution project,

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which is the one we're going to talk about in the next video,

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where I'll show you my solution. So have fun.

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Add fields to it, if you like. Change the the length of the answers.

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Right now the quiz is only 5 questions. You can change that around if you like.

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Like I said, do the base challenge, and then just have fun and learn from it.

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All right. So I'll see you in the next video, and I'll show you a solution.