Comment by voidUpdate
3 hours ago
I don't use C enough to know what the convention is for throwing an error when the function can return a number anyway. You'd have to ask someone else
3 hours ago
I don't use C enough to know what the convention is for throwing an error when the function can return a number anyway. You'd have to ask someone else
In C, errors are usually indicated by a negative return value constant, crashing the program with abort, or setting the errno global (thread-local, but whatever) and expecting callers to check it. Sometimes multiple of those.
One reasonably common pattern is to have the return value indicate success / error, and you pass in a pointer to the value which will be mutated if successful.