When is casting void pointer needed in C?

Question

I\'ve been looking at Advanced Linux Programming by Mitchell, Oldham and Samuel. I\'ve seen in the section on pthreads something about void pointers and casting tha

Answer 1

In C, casting to void* from any pointer type and vice-versa is done implicitly. There's no need for the cast in the second example.

(Note that in C++ casting any pointer to void* is also done implicitly (except for function pointers and function-member / method pointers which cannot be cast to void*), but casting back requires an explicit cast.)