How many raw data records i gonna read using following program during each data iteration?

[Attyslogin]

data numrecords;

infile "file specification";

input @1 patient $ 15. relative$ 16-26@;

if relative="children" then

          input @54 diagnosis $ 15. @;

elseif relative="Parents" then

          input @28 doctor $15. clinic$ 44-53 @54 diagnosis $15.@;

input age;

run;

[RW9 · Accepted solution]

Well, I haven't tested, but my guess would be one.  The reason is the first input reads some data, then an if statement switches wether the next or the third input is run.  But at no point does the line pointer go to the next row as each of the input statements ends in the @ symbol which means the line pointer is held over.  So again, just guessing here as can't test, I would imainge only one record is read in (depending on data!) each iteration of dataset.