gengetopt software package provides skeleton main.c generator, 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 gengetopt
gengetopt is installed in your system.
Make ensure the gengetopt package were installed using the commands given below,
$ sudo dpkg-query -l | grep gengetopt *
You will get with gengetopt package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Development |
| Package | gengetopt |
| Version | 2.22.6+dfsg0-1 |
| Description | skeleton main.c generator |
| Sub Section | Devel |