What exactly does this line of code mean? int b= 1<--a

Question

The full code: int a=5; int b=1<--a; How much is b after?

Answer 1

--a reduces a by 1 and returns the result.

So it's the same as:

b = 1<4;

1<4 is true, so b becomes 1.

If it was false, b would become 0.

Answer 2

I mean the -- in the statement could be just a decrement operation and < could be comparison operator.

Answer 3

Isn't 1<--a almost same than 1 < (a - 1) ?