What does && mean

Question

very weird

Answer 1

it is AND operator and it returns true only if all operands are true.
ex: a1 and a2 and a3 ..it will be true only if a1, a2, a3 all are true.
comment if you still didn't understand.

Answer 2

In addition to @Raj Kumar Chauhan: && (and also ||) are evaluated as a "short circuit" procedure: if you have something like "b1 && b2 && b3 &&...", this will evaluate to false as soon as one of the b1, b2, b3... is false. Similarly, "b1 || b2 || b3 ||..." will evaluate to true as soon as one of the b1, b2, b3... is true.

Answer 3

Thank you!!

Answer 4

it means and