Why do we have reinterpret_cast in C++ when two chained static_cast can do its job?

Question

Say I want to cast A* to char* and vice-versa, we have two choices (I mean, many of us think we\'ve two choices, because both seems to wor

Answer 1

A concrete example:

char a[4] = "Hi\n";
char* p = &a;

f(reinterpret_cast(p));  // call f after restoring full type
      // ^-- any_cast<> can't do this...

// e.g. given...
template    // <=--- can match this function
void f(T (&)[N]) { std::cout << "array size " << N << '\n'; }