What are smart pointers in C++ and how do they work?

What are smart pointers in C++ and how do they work?

Smart pointers are objects that manage the lifetime of dynamically allocated memory in C++. They help prevent memory leaks.

Can you explain the different types of smart pointers?

Sure! The main types are std::unique_ptr, std::shared_ptr, and std::weak_ptr. Each serves a different purpose.

What is the difference between unique_ptr and shared_ptr?

unique_ptr allows only one owner of the resource, while shared_ptr allows multiple owners, managing reference counting.

When should I use weak_ptr?

Use weak_ptr to break circular references in shared ownership scenarios, preventing memory leaks.