Question

I have put each function in own file.

How do I include all those functions at once without repeating #include for each file manually? I don’t care at which order the functions are included.

All the functions from hundreds of different files belongs to the same group. Actually each file has 4 functions.

Answer 1

1. You add all the files containing the function definitions (function bodies) to your project
2. You write one header file that contains a declaration for your functions.
3. You include that header where needed.