Data Loop;
X=0;
do Index = 1 to 5 by 2;
x=Index;
end;
run;
X=5 , Index=7
Why is index=7.
Hello,
When index=5 and the interpreter meets the "end" statements, il loops back to the do
statement, increments index by 2 and compare the result to 5 => index=7>5 so the loop stops.
Adding a put statement in the loop could be helpful to understand what's happening.
A loop like yours is compiled to this (and the same is true for any programming language that has an iterative loop):
index = 1 start: if index > 5 goto end (loop code) index + 2 goto start end:
so you see that the index needs to go past the end value for the loop to exit.
Are you ready for the spotlight? We're accepting content ideas for SAS Innovate 2025 to be held May 6-9 in Orlando, FL. The call is open until September 25. Read more here about why you should contribute and what is in it for you!
Learn how use the CAT functions in SAS to join values from multiple variables into a single value.
Find more tutorials on the SAS Users YouTube channel.