What is the difference between const pointers and const data in C++?

What is the difference between const pointers and const data in C++?

In C++, a const pointer means the pointer itself cannot change to point to another address, while const data means the data being pointed to cannot be modified.

Can you give me an example of each?

Sure! For a const pointer: int* const ptr = &value; Here, ptr cannot point to another address. For const data: const int value = 10; Here, value cannot be changed.

What happens if I try to change the value of const data?

If you try to change the value of const data, the compiler will throw an error, as it is not allowed to modify it.

Are there any scenarios where using const pointers is beneficial?

Yes, const pointers are useful when you want to ensure that the pointer remains constant throughout its scope, preventing accidental changes.