data medical;
   length ID $ 4 LName FName $ 11 Plan $ 2 Blood $ 3 Allergy $ 1
          AlgyType $10; /* The length statement allows the user to 
		                      specify the character of a variable and its size*/

   infile 'C:/Garvii/Insurance.dat';
   input ID $ LName $ FName $ Plan $ Blood $ Allergy $ @;
                         /*Trailing @ prevents new record
                            from being LOADED*/
   if Allergy='N' then 
      input Dependents;
   else if Allergy='Y' then 
      input AlgyType $ Dependents;
run;

proc print data=medical;
   title 'Patients medical information';
run;