What are some common errors in variadic functions?

What are some common errors in variadic functions?

Common errors include incorrect argument counting, type mismatches, and not handling the variable arguments properly.

Can you explain how to handle variable arguments correctly?

To handle variable arguments, use the va_list, va_start, and va_end macros in C, ensuring you know the expected number of arguments.

What happens if I forget to call va_end?

Forgetting to call va_end can lead to memory leaks and undefined behavior, as resources may not be released properly.

Are there any best practices for using variadic functions?

Yes, always validate the number of arguments, use default values when possible, and document the expected types clearly.