Macro error message

[vicky07]

Hello,

Can someone tell what I am doing wrong with the below macro? Long story short, I have a input dataset(i'm using cars dataset for illustration purposes) from which I want to extract rows from a starting position and end position. The start and end values could change every run hence I am using macro to the pass the start and end positions.

I am getting the below error message:

ERROR: A character operand was found in the %EVAL function or %IF condition where a numeric operand is required. The condition was: 10 + 20 + 1
ERROR: Invalid number conversion on OBS.
ERROR: A character operand was found in the %EVAL function or %IF condition where a numeric operand is required. The condition was: 10 + 20 + 55

Thank you!

Code:

%let a = 10;
%let b = 20;
%let c = 55;

%Macro test(fst,lst);
Data temp;
Set sashelp.cars(firstobs=%eval(&fst. + 1) obs=%eval(&fst. + &lst.));
Run;

%Mend;

%test(%str(&a. + &b.),&c.)
;

[Tom]

You appear to be missing a space before the second dataset option name.

(firstobs=%eval(&fst. + 1)    obs=%eval(&fst. + &lst.))

[novinosrin · Accepted solution]

You are quoting unnecessarily

try:

%test((&a. + &b.),&c.)  

[vicky07]

It worked, Thanks!!