topic Re: Using an if statement with an AND in SAS Programming

Using an if statement with an AND

larkjr18 — Tue, 28 Mar 2017 00:45:46 GMT

Total_DOB = input(catx("/", month_dob, day_dob, year_dob),?? mmddyy8.);
if ((month_dob = 29) AND (day_dob= 02)) then Total_DOB = mdy(03,01,year_dob)-1;
else Total_DOB = mdy(month_dob,15,year_dob);

Total_DOB = input(catx("/", month_dob, day_dob, year_dob),?? mmddyy8.);

if ((Total_DOB = .) AND (month_dob = 29)) then Total_DOB = mdy(03,01,year_dob)-1;

else Total_DOB = mdy(month_dob,15,year_dob);

neither work and just change all of the dates with a . to the day with 15

Re: Using an if statement with an AND

Jagadishkatam — Tue, 28 Mar 2017 01:31:34 GMT

I would try the below approach if there are only two conditions

1) if the month_dob=02 and day_dob=29 then you want it to be imputed to 01MarYYYY. imputing only the day and month. if it is the case then what you mentioned is incorrect, you codes month_dob=29 which should be 02 as i mentioned so you reversed it.

2) if the above condition is not met then you would like to impute only the day to 15.

Please let me know if these are only two conditions you are checking.

Re: Using an if statement with an AND

Astounding — Tue, 28 Mar 2017 02:23:23 GMT

Let's start with the most obvious issues and clear them up. There might be more, but start with ...

Is YEAR_DOB really a two-digit year? That would be the only reason to use ?? MMDDYY8. But if YEAR_DOB is really a four-digit year, MMDDYY8 isn't long enough. You need to switch to MMDDYY10. because you have to count the slashes as part of the characters you are reading.

It looks like you have switched around the month and the day. It is highly unlikely that you will ever find MONTH_DOB=29.

Re: Using an if statement with an AND

PGStats — Tue, 28 Mar 2017 04:15:07 GMT

Did you know that function MDY can handle two digits year values? If the problem is that you are sometimes missing the day value, then all you need is:

Total_DOB = mdy (month_dob, coalesce(day_dob, 15), year_dob);

format total_DOB yymmdd10.;

Re: Using an if statement with an AND

Kurt_Bremser — Tue, 28 Mar 2017 11:27:48 GMT

First of all, are month_dob, day_dob, year_dob numeric or character? In your code snippet you treat them as both, which is at least not sound programming practice.

Assuming that they are numeric, I'd do

Total_DOB = input(put(year_dob,z4.) !! put(month_dob,z2.) !! put(day_dob,z2.),yymmdd8.);
if Total_DOB = .
then do;
  if ((month_dob = 29) and (day_dob = 2))
  then Total_DOB = mdy(3,1,year_dob)-1;
  else if day_dob = .
  then Total_DOB = mdy(month_dob,15,year_dob);
end;