A ____ pointer can point to any data-type:a.NULL pointer b.void pointer c. dangling pointer d. such a pointer does not exist

To determine which type of pointer can point to any data type, let's analyze the given options:

1. NULL pointer: A NULL pointer points to no valid data location. It does not reference any data type.

2. Void pointer: A void pointer (or generic pointer) is declared with the "void" type, which means it can point to any data type. In C and C++, a void pointer can be converted to any other pointer type without an explicit cast.

3. Dangling pointer: A dangling pointer points to a memory location that has been freed or deleted. It does not point to a valid data type anymore.

4. Such a pointer does not exist: This option is not correct, as a void pointer does indeed exist.

Conclusion

The correct answer is b. void pointer. This pointer can point to any data type, making it a versatile tool in programming with dynamic data structures.