std::auto_ptr

[c++]代码库

// std::auto_ptr
#include <memory>
void UsePointer(std::auto_ptr<CSomeClass> spObj);

int main() {
	using namespace std;
	cout << "main() started" << endl;

	auto_ptr<CSomeClass> spObject(new CSomeClass());

	cout << "main: Calling UsePointer()" << endl;

	// Call a function, transfer ownership
	UsePointer(spObject);

	cout << "main: UsePointer() returned, back in main()" << endl;

	// spObject->SaySomthing (); // invalid pointer!

	cout << "main() ends" << endl;

	return 0;
}

void UsePointer(auto_ptr<CSomeClass> spObj) {
	cout << "UsePointer: started, will use input pointer now" << endl;

	// Use the input pointer
	spObj->SaySomething();

	cout << "UsePointer: will return now" << endl;
}