使用缩进在此 LaTeX 文档中插入代码 - Inserting code in this LaTeX document with indentation

问题：

How do I insert code into a LaTeX document?如何在 LaTeX 文档中插入代码？ Is there something like:有没有类似的东西：

\begin{code}## Heading ##
...
\end{code}

The only thing that I really need is indentation and a fixed width font.我唯一真正需要的是缩进和固定宽度的字体。 Syntax highlighting could be nice although it is definitely not required.语法高亮可能很好，尽管它绝对不是必需的。

---

解决方案：

参考一： https://stackoom.com/question/DJzN
参考二： Inserting code in this LaTeX document with indentation