What are the advantages of using reference parameters?

Reference parameters allow functions to modify the arguments passed to them, enabling the function to operate directly on the original data rather than a copy. This can lead to improved performance, especially with large data structures, as it avoids the overhead of copying. Additionally, they can facilitate multiple return values from a function, as changes to the reference parameters persist outside the function scope. Finally, using reference parameters can enhance code clarity by making it explicit which variables are intended to be modified.