c++ - 如何在C ++中的类内使用`this`引用获取对象的内存地址

Question

How can I get the memory address of an object inside a class with this reference in C++.

I can get the memory address of an object outside the class by using the following:

Obj obj();
cout << &obj << endl;

I want to do this with this reference. Something like:

void Obj::method()
{
    cout << &this << endl;
}

But the above code gives an error. Is it possible in C++.

Answer 1

void Obj::method()
{
    cout << &*this << " or " << this << endl;
}

Answer 2

I can get the memory address of an object outside the class by using the following:

 Obj obj(); cout << &obj << endl;

That is not memory address of an object of type Obj . That is the memory address of a function that returns Obj . A function pointer won't be printed by a stream though, and is converted to a bool instead, so you'll always see 1.

---

 void Obj::method() { cout << &this << endl; }

You cannot take the address of this . You shouldn't either because what you want is the address of the object. this is already a pointer to this object, so simply don't use the addressof operator.