(1) According to the meaning of the question, A should be the same as the absolute value of A, except for it, which can be 1, so A can't be 0 at first, only the absolute value of an integer is the same as itself; So the answer to this question is that A is greater than 0;

(2) Because A is negative, the absolute value A must be positive, so the result of absolute value A is-A;

After adding another symbol in front of this, the result of this problem will be stale-(-a) = a;