Test program to show the difference of reference, pointer and copy

foo.cpp

#include <iostream>
#include <memory>


class Foo {
	std::string name;
public:
	Foo(std::string name) : name(name) {
		std::cout << "creating " << name << std::endl;
	}
	~Foo() {
		std::cout << "deleting " << name << std::endl;
	}
	Foo(const Foo& foo) {
		std::cout << "copy " << foo.name << std::endl;
		this->name = foo.name;
	}

	void test() {
		std::cout << "test: " << name << std::endl;
	}
};

int main(int argc, char** argv) {
	Foo                   blub("abc");
	std::shared_ptr<Foo> sblub = new Foo("shared_ptr abc");
	Foo                  pblub("problem");

	{
		Foo&                 a =  blub;
		std::shared_ptr<Foo> b = sblub;
		Foo                  c = pblub;

		a.test();
		b->test();
		c.test();
	}

	//blub
}