Include Cuda Files in existing c++11 project

Good morning,
I’m new of the forum and now I’m starting with cuda programming.
I’ve a c++11 project that I would integrate with Cuda to improve the performance, about this I’ve a question:
How can integrate cuda files in existing c++11 projet?

Thanks in advance for the support.
Raffaella

Probably, you can start with CUDA C Programming Guide.

https://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#c-cplusplus-language-support