Why the absolute value of the max negative integer -2147483648 is still -2147483648?

Question

The result of abs(-2147483648) is -2147483648, isn\'t it? it seems unacceptable.

printf(\"abs(-2147483648): %d\\n\", abs(-2147483648));

out

Answer 1

Since 2147483648 is greater than INT_MAX on your implementation, then abs(-2147483648) is undefined.