1) This code checks if the absolute value of an input integer is a 3-digit number (between 100 and 999 inclusive). If yes, it prints "YES"; otherwise, it prints "NO". 2) Hints: - Check for syntax errors in variable names (notice the space in "abs Num" and the typo in "absNum" later). - The `return` statement at the end is missing a value (should be `return 0;` for `main()`).