##############################################################################
# Parte do livro Introdução à Programação com Python
# Autor: Nilo Ney Coutinho Menezes
# Editora Novatec (c) 2010-2024
# Quarta Edição - Março/2024 - ISBN 978-85-7522-886-9
#
# Site: https://python.nilo.pro.br/
#
# Arquivo: capítulo 08/08.03 - Cálculo do fatorial.py
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def fatorial(n):
    fat = 1
    while n > 1:
        fat *= n
        n -= 1
    return fat