C library : weather station using GrovePi shield

For a student project, i have to make a weather station using a raspberry and a GrovePi+ shield.
The problem is that this project must be coded in C. Yet, the library I found to communicate with the GrovePi shield is mainly written in python.

Is there any library made for C project?

This is my first C project on a raspberry, so any help would be appreciated.


Says it is C/C++ on GrovePi

Well, not anymore.
On github the scripts are written in Python, Scratch, C++, C#, but not in C.