// unique_ptr.cc
#include <memory>
using namespace std;

int main()
{
  unique_ptr<int> p(new int(5)); // make a smart ptr to an int holding val 5
//unique_ptr<int> q = p; // compile error can't make copy of unique_ptr
  unique_ptr<int> q = std::move(p); // Transfer ownership of p to q

  q.reset(); // deletes memory pointed to by q
  p.reset(); // does nothing, move operation invalidated p as pointer

}