What are the differences between unique_ptr and shared_ptr in C++11?

Can you explain the differences between unique_ptr and shared_ptr in C++11?

Sure! unique_ptr is a smart pointer that owns a dynamically allocated object exclusively, while shared_ptr allows multiple pointers to share ownership of the same object.

What are the advantages of using unique_ptr over shared_ptr?

The main advantage of unique_ptr is that it has lower overhead since it doesn't require reference counting, making it more efficient in terms of performance.

Are there any scenarios where I should prefer shared_ptr?

Yes, you should use shared_ptr when you need shared ownership of an object, such as in cases where multiple parts of your program need to access the same resource.

Can you give an example of when to use each?

Certainly! Use unique_ptr for resource management in a single ownership context, like managing a resource in a function. Use shared_ptr for shared resources, like in a graph structure where multiple nodes point to the same object.