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All right.

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Welcome back.

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It's time for another exercise.

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This time we're going to get some practice with the note command as well as some of the command line

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basic commands and a nice review of javascript basics.

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I've typed up the instructions.

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Let me make this a little bigger and I'll go ahead and read out the exercise.

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So using the command line create a file named Echo.

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Yes.

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Inside the file.

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Write a function named Echo that takes two arguments a string and a number.

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It should then print out the string number.

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Number of times.

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I know that's worded terribly.

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I struggled for a while trying to come up with a better a better way of phrasing it but I think just

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taking a look at the examples helps to illustrate it more than anything I could say.

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So we call Ekko with a string.

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In this case Ecko with three exclamation points and then a number 10 and that should print out echo

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the string 10 times.

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And if I called the Echo function with the string tater tots and then the number three it should print

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out.

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Tater tots three times.

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So you need to define a file.

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Echo J S.

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Then define a function called echo inside the function and at the bottom of the function.

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Add these two examples just that you have some test cases and then the last thing you need to do is

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run the contents of that echo japes file using Knode as always Pozza video right now.

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Go ahead do this on your own and then I'll be back in a little bit with a solution.

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Let's get started.

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So we need to create a file named Echo.

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Yes so I'm going to do that right here.

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Touch echo.

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Yes and then inside the file.

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Write a function named Echo.

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So let's open up the file can see it here open

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and the first thing that we need to do is write a function named Echo that takes two arguments.

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Let's do that now.

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Function.

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I go and take an argument string and no just like that it should print out the string number number

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of times.

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So we know we need to have a cancel but log string in there somewhere and then we need to repeat this

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line cancel belt log number or Nome number of times.

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We could either use a while loop or a for loop to do this.

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I definitely prefer for loops so we'll do that here.

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So for and we can do this multiple ways we can start with.

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We can start with a variable equal to zero and go all the way up until we can start with a variable

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equal to numb and count backwards down to zero.

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We can start at an arbitrary number like 30 and then keep going until we hit 30 plus now.

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But I'm just going to start with I equal to zero.

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And then when do I.

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Is less than numb.

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And the reason that it's less than is that I'm starting at zero.

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If I wanted to I could start at 1 and go less than or equal to numb and then I'll just add one to I

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.

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And we're never going to use the variable all that we're doing is putting a constant log inside so we

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don't use.

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We're just every time going to cons. about lug strength.

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Now let's copy these two examples and just put them at the bottom and let's go ahead and try running

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this.

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So we need to save the file first and then we need to go to our command line make sure we see the file

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.

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I go through yes and then we run it with the command node.

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Echo.

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Yes and there we go.

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Let's see we have one two three four five six seven eight nine ten echoes and then we get tater tots

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three times.

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That's all we needed to do in the next video.

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There's one more exercise that's a little bit more challenging.

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Using an array