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 be changed.

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

Sure! Use const references when passing large objects to functions to avoid copying, like this: void func(const MyClass& obj) { ... }.

Are there any performance benefits to using const parameters?

Yes, using const parameters can improve performance by avoiding unnecessary copies, especially with large objects.

What about using const with pointers?

When using const with pointers, you can have const Type* ptr to prevent changing the object pointed to, or Type* const ptr to prevent changing the pointer itself.