Numeric Array Functions

[SercoSteveB]

What are Numeric Value Out 1 and Numeric Value Out 2 following execution of the VI?

a) Numeric Value Out 1=1, Numeric Value Out 2=6

b) Numeric Value Out 1=21, Numeric Value Out 2=208

c) Numeric Value Out 1=21, Numeric Value Out 2=720

d) Numeric Value Out 1=720, Numeric Value Out 2=720

[Musale]

numeric out1=21

numeric out2=720

[SercoSteveB]

Nice one Musale.  Question amended,

[nmpundlik]

Answer is C.

[crossrulz]

C

You don't really need to find the actual results to figure this one out.  You can do some estimates that will weed out the obvious wrong answers.

[MrStevenUND]

C.

[JGmitter]

C.  Estimation is key. 

[LordNobady]

C

[jagadishj]

The answer is C.

[RAMESHB]

Answer is C.

[SercoSteveB]

Answer: C. B.  Nice one Musale, nmpundlik, crossrulz, MrStevenUND, J-MACK, LordNobady, jagadishj & RAMESHB

Yep; it is good to slide in some exam technique into the questions identifying the simpler LabVIEW concepts.  No need to complete the operations in this one, estimate (thanks crossrulz & J-MACK) and save yourself some valuable time in the exam.

See below.

[mini09]

when i run with I32 data type the answer is C. if i run with the U8 the answer is B so according to the given question B should be the answer.

[SercoSteveB]

Well at least one of us is paying attention.  Nice one gnshmrthy kudos to you.

Answer: B.  Nice one gnshmrthy.

Slightly embarrassing for me as I can now remember adding this little gotcha...and managed to get myself.

[mini09]

Thanks Steve.

[Joseph.Vitale]

C. Thank you so much for supplying all of these qestions.

[aqz]

hi can anybody tell me how 208 came?

[crossrulz]

The data type is a U8.  Therefore, once the value goes above 255 (0xFF), it must roll over (256 => 0).  The easiest way to do this is to just drop any of the extra bits (just keep the lower 8 bits).  When you do this, 720 (0x2D0) becomes 208 (0xD0).

[aqz]

ok got it.....we need to start counting with hex values, what i did was to convert the decimals like 255 + 255 giving closest value to 720, which is 210 i guess...thanks

[ashwinilele]

B. Because of U8

Otherwise

Ans C

[s.vishal91]

I'm getting 21 and 255...can someone tell me wer im goin wrong??

[mini09]

Hi vishal, you shouldn't be getting 255. Can you make a snippet of your code and share it.

[s.vishal91]

[s.vishal91]

The array elements are same as given in the question..

[s.vishal91]

sorry...got it...forgot make the array u8

[s.vishal91]

But, can u explain me how?

[crossrulz]

How what?  Please be more specific with your questions.

I think what you are seeing is the Add Array Elements and the Multiply Array Elements are working with a DBL floating point array.  So the results will be 21 and 720.  But the indicators are U8, so the 720 is being coerced to the maximum U8: 255.

[s.vishal91]

Can you explain you earlier post?

[crossrulz]

What part of it do you not undersand?

[skian]

c