| // Copyright 2017 The Fuchsia Authors. All rights reserved. | |
| // Use of this source code is governed by a BSD-style license that can be | |
| // found in the LICENSE file. | |
| #ifndef FACTORIAL_H_ | |
| #define FACTORIAL_H_ | |
| namespace factorial { | |
| // Returns n! (the factorial of n). For negative n, n! is defined to be 1. | |
| int Factorial(int n); | |
| } // namespace factorial | |
| #endif // FACTORIAL_H_ |