Complex sentence: The short-circuit operator "x" Sand "y" is equivalent to the conditional expression if "x" then "y" else false; "x" Sor "y" is equivalent to if "x" then true else "y".
Split into simpler sentences: The short-circuit operator "x" Sand "y" is equivalent to the conditional expression if "x" then "y" else false. Expression "x" Sor "y" is equivalent to if "x" then true else "y".