std::unique_ptr<int> &c, std::unique_ptr<int> &d) {

std::cout << "Shared pointer 1: " << *a << " count " << a.use_count() << std::endl;

std::cout << "Shared pointer 2: " << *b << " count " << b.use_count() << std::endl;

std::cout << "Unique pointer 3: " << *c << std::endl;

std::cout << "Unique pointer 4: " << *d << std::endl;

std::cout << std::endl;

// Shared pointers

std::shared_ptr<int> sptr1(new int(1));

auto sptr2 = std::make_shared<int>(2);

// Unique pointers

std::unique_ptr<int> uptr3(new int(5));

auto uptr4 = std::make_unique<int>(10);

printPointers(sptr1, sptr2, uptr3, uptr4);

*sptr1 = 3;

std::cout << "sptr1 value changed: *sptr1 = 3;" << std::endl;

printPointers(sptr1, sptr2, uptr3, uptr4);

*uptr3 = 7;

std::cout << "uptr1 value changed: *uptr1 = 7;" << std::endl;

printPointers(sptr1, sptr2, uptr3, uptr4);

sptr2 = sptr1;

std::cout << "sptr2=sptr1" << std::endl;

printPointers(sptr1, sptr2, uptr3, uptr4);

//sptr2 = new int(4);

sptr2.reset(new int(4));

std::cout << "sptr2 changed" << std::endl;

printPointers(sptr1, sptr2, uptr3, uptr4);

//uptr3 = uptr4;

uptr3 = std::move(uptr4);

std::cout << "sptr3 = std:move(uptr4)" << std::endl;

std::cout << "Unique pointer 3: " << *uptr3 << std::endl;

return 0;