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Before we start, did you try solving the workbook yourself?

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If not, please click the link in the resources folder and follow the instructions for this workbook.

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Welcome to Work Book 4.1 In this workbook, we need to print this passage six times, but we don't want

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to copy and paste code.

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Instead, what we want to do is create a function.

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As always, it's going to be public and for us to be able to access it from the static main function,

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our print lines function needs to be static as well.

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Don't worry too much about what static is right now.

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We will cover it in module two.

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Anyways.

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The function is going to be void.

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It's not going to return any values.

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We're going to talk about return values later in the section and the function name is print lines.

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The function will not receive any parameters.

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We will talk about parameters again later in the section.

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And all this function is going to do is print four lines, print these four lines whenever it's called.

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And that is all, Let me fix up the indentation and we are good.

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Now I know what you're thinking.

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What is void?

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What are parameters?

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Don't worry about this right now.

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All in due time.

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All you need to know is that when we call print lines, it's going to perform the task of printing these

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lines.

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So let's do just that.

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Task two is to call the function six times.

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So we'll call this six times one, two, three, four, five, six.

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And by the way, I know that I laid out all of your tasks in the code itself, but those instructions

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do not replace the ones.

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I'll learn the part.

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The instructions on learn the part are much more detailed.

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All right.

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Anyways, let us go ahead and visualize the runtime using our debugger.

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Putting breakpoints everywhere.

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So here what we can do is step inside the function by pressing step into.

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And once you're inside the function, you can just keep pressing step over.

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You don't want to press step into again because then it's going to step into print line.

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Let's do just that.

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And it steps inside the print line function.

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Oh, yes, Print line is also a function, but we're not going to get into that right now.

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Let us restart the runtime.

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All we want to do is step inside the function that we created.

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We will step inside the function.

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And once you're inside the function that you called, you can just step over all of the lines in order

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to execute them without diving into their internals.

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So we'll step over this line printing.

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I will not copy and paste code, stepping over this line, stepping over that and beautiful.

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Now, we'll continue to the next breakpoint and once again, we step inside the function and take this

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as a rule of thumb.

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Once you're already inside the function that you're calling, then you can just keep pressing step over

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to execute every line inside of this function.

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All right.

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Repeating that stepping inside of our third function call.

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It prints.

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I will not copy and paste code again, prints all of these messages and it's going to do that three

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more times.

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I'm not going to step inside the function every single time we call it.

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So what I'll do actually is I will remove the breakpoints, press, continue to resume execution, and

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here you will see that by virtue of calling the function six times, our message was printed six times.

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That is all for workbook 4.1.

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I hope you enjoyed this breakpoint session.