What is a const pointer in C++?

What is a const pointer in C++?

A const pointer in C++ is a pointer that cannot be changed to point to a different address after it is initialized.

Can you give me an example of how to use a const pointer?

Sure! Here's an example:

int value = 10;
int* const ptr = &value; // ptr is a const pointer to value
*ptr = 20; // This is allowed, value is now 20
// ptr = &anotherValue; // This would cause a compilation error.

What happens if I try to change the pointer itself?

If you try to change the pointer itself, you'll get a compilation error because const pointers cannot be reassigned.

Are there any other types of pointers I should know about?

Yes, there are several types, including regular pointers, const data pointers, and smart pointers. Each serves different purposes.