Embedded Programming with Modern C++ Cookbook

How it works...

In our application, we defined three different implementations of a function that receives data from some device. It should return the received data as a string, but in the case of an error, it should return an integer error code representing the reason for the error. 

Since the result and the error code have different types, we can't reuse the same value for both. To return multiple values in C++, we either need to use output parameters or create a compound data type.

Our implementations explore both these strategies. We use C++ function overloading to define the Receive function with the same name, but different types of arguments and return values.

The first implementation returns an error code and stores the result in ...