#include <memory>   // for std::unique_ptr
#include <cstdlib>  // for EXIT_SUCCESS

using std::unique_ptr;


typedef struct { int a, b; } IntPair;

int main(int argc, char **argv) {
  unique_ptr<int> x(new int(5));

  int *ptr = x.get(); // Return a pointer to pointed-to object
  int val = *x;       // Return the value of pointed-to object

  // Access a field or function of a pointed-to object
  unique_ptr<IntPair> ip(new IntPair);
  ip->a = 100;

  // Deallocate current pointed-to object and store new pointer
  x.reset(new int(1));

  ptr = x.release();  // Release responsibility for freeing
  delete ptr;
  return EXIT_SUCCESS;
}