topic Re: why is the answer C correct ？ in SAS Programming

why is the answer C correct ？

tianerhu — Thu, 18 Mar 2021 18:00:50 GMT

I think that the answer A is correct ? But the key is C. why ? Thank you.

Re: why is the answer C correct ？

Reeza — Thu, 18 Mar 2021 18:12:48 GMT

Because there's no trailing @.

Re: why is the answer C correct ？

tianerhu — Thu, 18 Mar 2021 18:30:11 GMT

Could you give me more detail explain? Thank you .

Re: why is the answer C correct ？

Tom — Thu, 18 Mar 2021 18:32:40 GMT

Assuming the typo's in the SAS code were fixed and the misalignment of the columns of the data is just because of the use of a proportional font in the displaying the question then C is the right answer. If the typos remain then it will never generate any dataset so none of the answers are right.

The question is trying to access if you understand when SAS moves to the next line of an input file.

Re: why is the answer C correct ？

ballardw — Thu, 18 Mar 2021 18:51:41 GMT

As @Tom says, the code needs to be fixed. The INFILE is spelled incorrectly and no data set would be created as posted.

67   data example;
68      in file 'something.txt';
        --
        180
ERROR 180-322: Statement is not valid or it is used out of proper order.

69      input a $;
70   run;

Re: why is the answer C correct ？

Reeza — Thu, 18 Mar 2021 19:32:00 GMT

You're aware the newer SAS certification exam doesn't bother testing most of these concepts anymore? I assume you're using one of the older test exam banks that really aren't worth the paper they're printed on...

Re: why is the answer C correct ？

mkeintz — Sun, 21 Mar 2021 01:29:43 GMT

Every time there is an INPUT statement, SAS ~~first~~ advances to the next line of raw data after reading the designated variables. So the input statement conditioned on "SUE" is already pointing at the next record - giving a value of 40 for age.

BUT ... if the first input has a trailing "@", then the conditional INPUT would read from the same record.

Re: why is the answer C correct ？

tianerhu — Sun, 21 Mar 2021 00:50:12 GMT

Thank you for your advise, I appreciate.

Re: why is the answer C correct ？

tianerhu — Sun, 21 Mar 2021 02:18:39 GMT

The typo can be ignored. We suppose it was infile.

Thank you for your help.

Re: why is the answer C correct ？

tianerhu — Sun, 21 Mar 2021 19:06:26 GMT

Thank you for your help.

Re: why is the answer C correct ？

tianerhu — Mon, 22 Mar 2021 01:49:31 GMT

Thank you for your help.