## Engine‑power conversion (HP ↔ kW) - **Description:** Converting between horsepower (HP) and kilowatts (kW) is a common task. - Assume `1 HP ≈ 0.7355 kW`. - The user enters a value and chooses whether to convert from HP to kW or from kW to HP. - Show the result rounded appropriately (e.g., to 2 decimal places). - **Extension:** Add error handling if the user types an invalid number or conversion type.