c++ - 如何处理在 C++ 中定义的 C char*

Answer 1

The problem is that string literals "this is a string literal" are of type char[] in C but const char[] in C++. So if you have sloppily written C code which doesn't use const correctness of function parameters, that code will break when ported to C++. Because you can't pass a const char* to a function expecting char*.

And no, it is generally not safe to "cast away" const - doing so is undefined behavior in C and C++ both.

The solution is to fix the original C code. Not using const correctness is incorrect design, both in C and C++. If the C++ compiler supports compound literals, then one possible fix could also be:

#define IPADDRESS (char[]){"fd9e:21a7:a92c:2323::1"}