How does one deal with error return of a routine in C, when function calls go deep?
Since C does not provide an exception throw mechanism, we have to check return values for each function. For example, the “a” routine may be called by “b”, and “b” may called by many other routines, so if “a” returns an error, we then have to check it in “b” and all other routines calling “b”.
It can make the code complicated if “a” is a very basic routine. Is there any solution for such problem?
Actually, here I want to get a quick return path if such kind error happens, so we only need to deal with this error in one place.
I’m afraid that’s the way it is. Without exceptions, you have to check the return value of every function in the call chain.