data class_blanks;
  set sashelp.class;
  output;
  if mod(_n_,5)=0;
  array allnums {3} age weight height;
  array allchar {2} name sex;
  drop i;
  do i=1 to 3;
    allnums{i}=.;
  end;
  do i=1 to 2;
    allchar{i}=" ";
  end;
  output;
run;
options missing=" ";
proc print data=class_blanks noobs;
  title1 "SASHELP.CLASS with Blank Line After Every 5 Observations";
run;
options missing=".";