topic Re: if then do else if do in SAS Programming

if then do else if do

BrahmanandaRao — Fri, 25 Mar 2022 06:37:57 GMT

data even_odd;
do i= 1 to 100 ;
if mod(i,2)=0 then do;
number='Even' ;
end;

else if mod(i,2)=1 then do ;
number ='Odd';
end;
run;

I am using if then do else if do

to get even and odd result in number variable column

Re: if then do else if do

Kurt_Bremser — Fri, 25 Mar 2022 06:56:45 GMT

And what is your question?

Re: if then do else if do

BrahmanandaRao — Fri, 25 Mar 2022 07:02:14 GMT

Error unclosed Do block

Re: if then do else if do

Kurt_Bremser — Fri, 25 Mar 2022 07:24:13 GMT

Against a gazillion of advice to the contrary, you still refuse to use proper code formatting with indentation, which makes finding such an issue a breeze. If you are not interested in advice, why do you come here at all?

Start by using consistent indentation for your do/end blocks, and the problem will jump into your eyes so hard that I have to fear for your future eyesight.

Re: if then do else if do

BrahmanandaRao — Fri, 25 Mar 2022 07:31:33 GMT

data even_odd;
do i= 1 to 100 ;
	if mod(i,2)=0 then do;
number='Even' ;output;
		end;

	else if mod(i,2)=1 then do ;
number ='Odd';output;
	end;
	end;
run;

Re: if then do else if do

Kurt_Bremser — Fri, 25 Mar 2022 07:52:40 GMT

Don't use tabs in code, use a consistent number of blanks. SAS Studio and Enterprise Guide provide options for replacing tabs with blanks while you type code, my "fictional" tab width is always set to 2, so my recommendation for formatted code looks like this:

data even_odd;
do i = 1 to 100;
  if mod(i,2) = 0
  then do;
    number = 'Even';
    output;
  end;
  else do;
    number ='Odd';
    output;
  end;
end;
run;

The second IF is not necessary as the MOD function with a second parameter of 2 can only return 0 or 1.

But you can make your code even simpler:

data even_odd;
length i 8 number $5;
do i = 1 to 100;
  number = ifc(mod(i,2),"Odd","Even");
  output;
end;
run;

Re: if then do else if do

ballardw — Fri, 25 Mar 2022 14:10:25 GMT

data even_odd;
   do i= 1 to 100 ;
      if mod(i,2)=0 then do;
         number='Even' ;
      end;

      else if mod(i,2)=1 then do ;
         number ='Odd';
      end;

/* see anything missing*/
run;

Line up your code and things are easier to see exactly where the problem is.

"Error unclosed Do block" means that you have a DO without an END

Re: if then do else if do

yabwon — Fri, 25 Mar 2022 20:18:41 GMT

One more way of "readable" indentation would be:

data even_odd;
  do i = 1 to 100;
    if mod(i,2) = 0 then 
      do;
        number = 'Even';
        output;
      end;
    else 
      do;
        number ='Odd';
        output;
      end;
  end;
run;

Bart