How does shared_ptr work in C++?

Can you explain how shared_ptr works in C++?

Sure! A shared_ptr is a smart pointer in C++ that manages the lifetime of an object through reference counting.

What happens when the last shared_ptr pointing to an object is destroyed?

When the last shared_ptr is destroyed, the reference count drops to zero, and the managed object is automatically deleted.

How does shared_ptr prevent memory leaks?

It prevents memory leaks by ensuring that the memory is freed when no shared_ptr instances point to the object anymore.

Can shared_ptr be used with arrays?

Yes, but you should use std::shared_ptr<T[]> for arrays to ensure proper deletion of the entire array.