Hi,
as mentioned before, you need to make sure the following file exists:
/home/inam/Downloads/fuzzylite-5.0/fuzzylite-5.0/fl/Headers.h
when you write `-I
/home/inam/Downloads/fuzzylite-5.0/fuzzylite-5.0/thefl/Headers.h` must be accessible from there. In your case, it seems it is not accessible from there. Please make sure this is the case.
In addition, you could try adding Hello.cpp at the end (e.g., g++ -I... -l... Hello.cpp).
Cheers.