objective-c - header search path

Question

Ask a question, isn’t the header search path the search path for header files? I currently have a .h file in the project directory with the path a/b/.h. If I want to import the header file into the project like this #import How should the "b/.h" header search path be configured? If it is configured as $(SRCROOT)/a, will this not work? Will it still report an error that the header file .h cannot be found, or will it say that it cannot be referenced in this way?