What are the best practices for using const parameters in C++?

What are the best practices for using const parameters in C++?

Using const parameters in C++ helps to prevent accidental modification of data. It's best to use them for function parameters that should not change.

Can you give me an example of when to use const reference parameters?

Sure! If you have a large object, like a vector, passing it as a const reference avoids copying it, improving performance.

Are there any situations where I shouldn't use const?

Yes, if you need to modify the parameter within the function, you should not use const. It's also not suitable for parameters that need to be reassigned.

What about using const with pointers?

Using const with pointers can be tricky. You can have a const pointer to a non-const object, or a non-const pointer to a const object, depending on your needs.