要思想，更要行动！

Yes. You are right.

You can use eof= option to have a label section. In the section you can write down your end of file handling. See example below.

data t;
  infile cards eof=eof ;
  input x y;
  output;
  return;
  eof: put 'I am here';
      do i=1 to 5;
            output;
          end;
  cards;
  1 2
  3 4
  ;

  proc print;run;

学习了怎样用return和eof, 好！