indent software package provides C language source code formatting program, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install indent
indent is installed in your system.
Make ensure the indent package were installed using the commands given below,
$ sudo dpkg-query -l | grep indent *
You will get with indent package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Development |
| Package | indent |
| Version | 2.2.11-4 |
| Description | C language source code formatting program |
| Sub Section | Devel |