Enter a base name for the files. Choose the header file extension (e.g., .h, .hpp). Choose the source file extension (e.g., .cpp, .c). Select directories (if c-cpp-auto-pair.useManualFolderSelection: ...

C/CPP files should include their own header files first and you should enable those warnings you said. But that is not enough: the compiler doesn’t check the names of the parameters, ...

I always have one .cpp file (for function definitions) and one .h file ... (especially a template) in a lot of places, it might be wise to put it in a separate header file and include that.