When I performed a dry run on code ,I assumed output to be as main worker.And when I ran this code in IDE,it too printed main worker.
But ans to above Q in mock exam is indeterminate .
What did you get when you ran it? Whatever it outputs would be the correct answer.
[edit - i should read the entire post before I reply]
Programming threads can create what is known as a 'race condition'. Two things are competing to do something, and whichever one finished first 'wins'. You could run threaded code 1000 times and get the same result each time, then the 1001st time get something different.
There are only two hard things in computer science: cache invalidation, naming things, and off-by-one errors
Don't get me started about those stupid light bulbs.
