8. (Smart Pointers Review)

We include some easy exercises on the use of smart pointers.

Answer the following questions:

a) Use move semantics to create a shared pointer from another shared pointer and from a unique pointer.

b) Swap two shared pointers; swap two unique pointers.

c) Create a weak pointer from a shared pointer and from another weak pointer.

In all cases, determine what the reference count is and how resource ownership is addressed.