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What is the benefit of terminating if … else if constructs with an else clause?

As mentioned in another answer, this is from the MISRA-C coding guidelines. The purpose is defensive programming, a concept which is often used in mission-critical programming. That is, every if – else if must end with an else, and every switch must end with a default. There are two reasons for this: Self-documenting code. If … Read more

Best practice for compute the function return value

The second is best because it is so much easier to read, scales well with increased complexity and immediately stops executing the function upon errors. This is the only sensible way to write such functions when you have extensive error handling inside a function, for example if the function is a parser or protocol decoder. … Read more