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Hi,

Let' say I have a class with an object pointer as member something like:

// classA.h
class A
{
A(B* pB);
B* m_pB;
};

//classA.cpp

class A:A(B* pB):
m_pB(NULL)
{
m_pB = pB;
if (m_pB == NULL)
return;
}

so I want to be sure m_pB is not NULL, so I am initializing it in
initialization list with NULL and after I am checking its value.
But my question is what is done first, the initialization(m_pB=NULL) or
the declaration in the body ?

Vincent RICHOMME sade:
> Hi,
>
> Let' say I have a class with an object pointer as member something like:
>
> // classA.h
> class A
> {
> A(B* pB);
> B* m_pB;
> };
>
> //classA.cpp
>
> class A:A(B* pB):

A::A(B* pB):

> m_pB(NULL)
> {
> m_pB = pB;
> if (m_pB == NULL)
> return;
> }
>
> so I want to be sure m_pB is not NULL, so I am initializing it in
> initialization list with NULL and after I am checking its value.
> But my question is what is done first, the initialization(m_pB=NULL) or
> the declaration in the body ?

The constructor initializer list is executed before the constructor body.

TB