cflow software package provides Analyze control flow in C source files, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install cflow
cflow is installed in your system.
Make ensure the cflow package were installed using the commands given below,
$ sudo dpkg-query -l | grep cflow *
You will get with cflow package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Development |
| Package | cflow |
| Version | 1:1.4+dfsg1-3 |
| Description | Analyze control flow in C source files |
| Sub Section | devel |