Click here to Skip to main content
15,907,874 members
Home / Discussions / C / C++ / MFC
   

C / C++ / MFC

 
GeneralRe: DirectX + (MFC or managed) C++ Pin
snir_ya18-Dec-07 4:09
snir_ya18-Dec-07 4:09 
GeneralRe: DirectX + (MFC or managed) C++ Pin
Mark Salsbery18-Dec-07 6:17
Mark Salsbery18-Dec-07 6:17 
GeneralRe: DirectX + (MFC or managed) C++ Pin
snir_ya18-Dec-07 6:26
snir_ya18-Dec-07 6:26 
GeneralRe: DirectX + (MFC or managed) C++ Pin
Mark Salsbery18-Dec-07 6:51
Mark Salsbery18-Dec-07 6:51 
GeneralRe: DirectX + (MFC or managed) C++ Pin
snir_ya18-Dec-07 7:05
snir_ya18-Dec-07 7:05 
GeneralRe: DirectX + (MFC or managed) C++ Pin
Mark Salsbery18-Dec-07 7:15
Mark Salsbery18-Dec-07 7:15 
GeneralRe: DirectX + (MFC or managed) C++ Pin
snir_ya18-Dec-07 7:21
snir_ya18-Dec-07 7:21 
Generalmember variable initialization Pin
George_George18-Dec-07 2:13
George_George18-Dec-07 2:13 
Hello everyone,


I am wondering in the following code, member variable a in class B is not put in the initialization list or constructor of B directly, but it is initialized. How and when member variable a of class B is created and initialized? Is constructor of B invokes constructor of a?

Output is,

In constructor A
In constructor B

using namespace std;

class A
{
public:

	A()
	{
		cout << "In constructor A" << endl;
	}
};

class B
{
public:

	A a;

	B()
	{
		cout << "In constructor B" << endl;
	}
};

int main()
{
	B b;

	return 0;
}



thanks in advance,
George
GeneralRe: member variable initialization Pin
CPallini18-Dec-07 2:23
mveCPallini18-Dec-07 2:23 
GeneralRe: member variable initialization Pin
George_George18-Dec-07 2:48
George_George18-Dec-07 2:48 
GeneralRe: member variable initialization [modified] Pin
George L. Jackson18-Dec-07 2:55
George L. Jackson18-Dec-07 2:55 
GeneralRe: member variable initialization Pin
George_George18-Dec-07 3:10
George_George18-Dec-07 3:10 
GeneralRe: member variable initialization Pin
toxcct18-Dec-07 3:15
toxcct18-Dec-07 3:15 
GeneralRe: member variable initialization Pin
CPallini18-Dec-07 3:19
mveCPallini18-Dec-07 3:19 
JokeRe: member variable initialization Pin
CPallini18-Dec-07 3:23
mveCPallini18-Dec-07 3:23 
GeneralRe: member variable initialization Pin
toxcct18-Dec-07 3:30
toxcct18-Dec-07 3:30 
GeneralRe: member variable initialization Pin
CPallini18-Dec-07 3:33
mveCPallini18-Dec-07 3:33 
GeneralRe: member variable initialization Pin
toxcct18-Dec-07 3:38
toxcct18-Dec-07 3:38 
GeneralRe: member variable initialization Pin
CPallini18-Dec-07 3:45
mveCPallini18-Dec-07 3:45 
GeneralRe: member variable initialization Pin
toxcct18-Dec-07 3:52
toxcct18-Dec-07 3:52 
GeneralRe: member variable initialization Pin
CPallini18-Dec-07 4:12
mveCPallini18-Dec-07 4:12 
QuestionRe: member variable initialization Pin
David Crow18-Dec-07 4:13
David Crow18-Dec-07 4:13 
JokeRe: member variable initialization Pin
CPallini18-Dec-07 4:18
mveCPallini18-Dec-07 4:18 
GeneralRe: member variable initialization Pin
George_George18-Dec-07 18:24
George_George18-Dec-07 18:24 
GeneralRe: member variable initialization Pin
George L. Jackson18-Dec-07 4:00
George L. Jackson18-Dec-07 4:00 

General General    News News    Suggestion Suggestion    Question Question    Bug Bug    Answer Answer    Joke Joke    Praise Praise    Rant Rant    Admin Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.