#include <iostream>
#include <memory>

class Resource
{
public:     
	Resource() { std::cout << "Resource acquired\n"; }
	~Resource() { std::cout << "Resource deleted\n"; }
    void use() { std::cout<<"Resource use\n"; }
};

void test()
{
    // allocate memory from the heap: 
    auto res = std::make_unique<Resource>(); // One way
 	// std::unique_ptr<Resource> res{new Resource()}; // Another way
    std::cout<<"test using Resourse\n";
    res->use();
    std::cout<<"about to exit test()\n";
}// smart pointer automatically deleted here

int main()
{
    std::cout<<"calling test()\n";
    test();
    std::cout<<"returned from test()\n";
}