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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 Workbook 6.4.

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Task one is to pick up the user's response and store it in a string variable.

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So here I'm going to say string response is equal to scanner or scan next line.

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And workbook 6.4 is basically identical to 6.3, just like in workbook 6.3, we're going to index every

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single element inside of the store array and for every single element that we index, we're going to

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compare it against whatever the user inputs.

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And if the user's response matches one of the aisles inside of our store, then we are going to print.

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We have that in aisle, whatever I equals when this condition evaluates to true.

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And once we find what the user is looking for, we break the loop.

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And that is all.

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This is extremely identical to workbook 6.3.

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It doesn't really introduce anything new aside from user interactivity.

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So let's go ahead and put one breakpoint at the line where you define the for loop, and we are going

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to visualize the runtime right now.

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So right now, next line is waiting for me to enter a string.

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I will enter the value bananas.

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All right, so their response equals bananas.

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This loop is going to keep running so long as I is smaller than the length of the store array.

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When I.

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Equals zero.

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The element that index zero of our store array is apples.

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Apples does not equal our response of bananas.

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So this will evaluate to false getting skipped.

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Now during the second run of our loop I equals one.

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The element at index one bananas does equal our response.

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So this will evaluate to true.

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We have bananas in aisle one.

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We're done searching.

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We can break the loop and continue with the runtime.

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Let's do this again.

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That was kind of fun.

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Let's say the user is looking for autonomy.

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The loop starts with I equaling zero when I equals zero were grabbing the element at index zero.

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So apples does not equal tw this if statement is going to evaluate the false.

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During the second run of our loop I equals one.

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The element at index one is bananas, which does not equal t during the third run of our loop.

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I equals to the element and index to candy does not equal t, so that's going to get skipped.

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Index three chocolate does not equal t now I equals for the element.

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That index for coffee does not equal t.

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And now during the last run of our loop I equals five.

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The element of index five does equal our response of T.

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So this evaluates to true.

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We have that in aisle number five.

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And now that we're done searching, we break the loop.

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And now let's imagine that the user enters something that isn't in our store.

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So let's say they are looking for, I don't know, crackers.

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When the loop runs, I equals zero.

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The element of index zero apples does not equal crackers, so this statement will get skipped.

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And no matter what I ends up equaling, none of the elements in the array are going to equal crackers.

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So this is going to keep going where the if statement is always going to evaluate the false until we

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get to our very last run where I ends up equaling five, the element that index five does not equal

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crackers.

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So now I a plus plus is going to increase I to six.

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The length of the store array is six.

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Six is not smaller than six, so the loop ends.

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And now we can just terminate the runtime.

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So the only difference between this workbook and workbook 6.3 and this one is more dynamic.

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The user can search for anything that they want.

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If we find what they're looking for, we print the following message break the loop to stop our search.

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But if we don't find what they're looking for, the for loop is going to run to completion, not printing

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anything.