> Linux is C
> Git is C
> Python interpreter (CPython) is C
> Ruby interpreter (MRI) is C
> PostgreSQL is C
> SQLite is C
> Redis is C
> MySQL is C++
> MongoDB is C++
> Unreal Engine is C++
> Chrome is C++
> Firefox is C++
> Windows kernel is C
> macOS kernel (XNU) is C
> Photoshop is C++
> VMware is C++
> TensorFlow (Core) is C++
still you are not convinced to learn C and C++