ShmoopTube

00:04

And here's your shmoop du jour brought to you by devious spaghetti [Man smirking near spaghetti]

00:07

companies confusing coders since the beginning of time... Consider the

00:11

following code segment......what is the value of Q after the code has run to

00:18

completion and here are the potential answers.... okay, here we go well this

00:24

requires us to track the value of Q as we traverse the loop and here's our [formula for value of q circled]

00:29

handy counter let's start tracing this mess of spaghetti code and pass the

00:34

butter alright so if we look at the first if loop notice that it's testing

00:37

whether I is odd so for every odd value between 0 and 30 Q will increment go up

00:44

there are 15 odd values between 0 and 30 and since Q is already one well we know [odd values circled]

00:49

in the end that it must be at least 16 let's take a look at the second

00:53

if loop, it tests whether q is equal to some number / q well in this case some

00:58

number is 0 is 0 / 1 equal to 1 well no, it's equal to 0 though in the second

01:04

iteration for the for loop the second if loops doesn't execute it just kind of

01:08

sits there looking dumb.....all right well in fact we can [Man sitting looking at the ocean]

01:13

see that the only time the second if loop executes is when I equals 2 so in

01:19

this case Q also equals 2 and 2 times 2 over 2 definitely equals 2 so wow that's

01:24

a lot of two's from there however Q will always be greater than two times I thus

01:30

the if loop will never execute again this means that we have Q at a total of [hand crosses line through if loop]

01:36

17 so the answer is C well done that's using your noodle [Boy sat at a table with plate of noodles]

Full Transcript