The code will output: 1. This demonstrates a key feature of the do...while loop: it always executes the code block at least once before checking the condition. In this case, i starts at 0, is incremented to 1 inside the loop, and then 1 is logged. After that, the condition i < 0 is checked, which is false (since i is now 1), so the loop terminates. Even though the condition was never true, the loop body was executed once. This is in contrast to a while loop, which would have checked the condition first and not executed the body at all in this scenario.