Question about FIND function

[zihdonv19]

Given the following dataset:

libname results 'c:\cert\output';
data results.output03_1 (drop=n);
set cert.input03;
n=find(major,'and','i');
if n^=0 then do;
second_major=subtr(major,n+4);
major=subtr(major,1,n-2);
end;
run;

 What do the above bold parts "i" "n+4" and "n-2" mean?

Thanks!

[novinosrin · Accepted solution]

i  - case insensitive search

n- starting position of the word searched in the string

n+4 - starting position from which substr will start to extract chars

n-2- evaluates to length of chars that the substr will extract

Please get hold of SAS functions  by example- A book by author Ron cody

[PaigeMiller]

You can also look up what SAS functions do, and what the options do, here:

Alphabetical List of All SAS 9.4 Functions