Make a pointer to an object in the constructor C++

Question

I would like to know how to make a pointer to a newly created object in the constructor in c++?

What is the address of a class?

class MyClass
{
    public:
};

class MyClass2
{
    public:
    //I need a pointer to the created object
    MyClass2 *pObjectName;

    //Constructor
    MyClass2()
    {
        pObjectName = &//I have no clue how to get the adress of the (not yet) created object.
    }
};

int main()
{
    //The way it works
    //Makes Object
    MyClass *pObject;
    MyClass Object;
    //pObject points to Object
    pObject = &Object;
    //Prints adress of Object
    printf("%p", pObject);


    //The way I would like to see it work
    MyClass2 Object2;
    //Prints adress of Object
    printf("%p", Object2.pObjectName);

}

Andy Prowl · Accepted Answer · 2013-03-18 19:32:45Z

5

It would be:

MyClass2()
{
    pObjectName = this;
}

But you do not need to do that. A this pointer is implicitly passed to each non-static member function of a class.

answered Mar 18, 2013 at 19:32

Andy Prowl

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Comments

sh03 · Accepted Answer · 2013-03-18 19:33:33Z

2

Inside the class you can access the pointer to the object with this. This pointer is defined and passed implicitly inside every instance method. Therefore you don't really need to memorize it into another variable.

answered Mar 18, 2013 at 19:33

sh03

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Comments

jcxz · Accepted Answer · 2013-03-18 19:33:32Z

1

you need to use this, e.g:

MyClass2()
{
  pObjectName = this;
}

answered Mar 18, 2013 at 19:33

jcxz

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Comments

Open AI - Opting Out · Accepted Answer · 2013-03-18 19:54:12Z

0

Why not say:

MyClass object;
printf("%p", &object);

answered Mar 18, 2013 at 19:54

Open AI - Opting Out

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2 Comments

Christiaan Over a year ago

Because I won't use it for just the printf function ;). Thanks alot though!

Open AI - Opting Out Over a year ago

I don't understand what you are trying to achieve.

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