This code defines a function `absolute` that returns the absolute value of an integer. It checks if the input is negative and, if so, returns its negation; otherwise, it returns the original value. The code is missing a `main` function to demonstrate or test it, and there is an extra blank line before the function definition.

- The function itself is correct, but the program has no entry point. You need to add a `main` function to call `absolute` and print the result.
- Ensure the `main` function is placed after the `absolute` definition or provide a forward declaration before `main`.