object destruction

[EN]

Hi.

I've small problem :
I've two objects, each from another class:
example object a from class A and b from B.
I method from class A :
a.setValue() I made object b:
B *b = new B();

What is happen when in main program I invoke delete to object a,
object b is destroy to???

example:

int main(){
A *a = new A();
a->setValue(4);
delete a;
}

Thanks in advice
EN

[Sharad Kala]

"EN" <[e-mail]> wrote in message

Hi.

I've small problem :
I've two objects, each from another class:
example object a from class A and b from B.
I method from class A :
a.setValue() I made object b:
B *b = new B();

What is happen when in main program I invoke delete to object a,
object b is destroy to???

example:

int main(){
A *a = new A();
a->setValue(4);
delete a;
}

Your language is not clear but b won't get destroyed when a is deleted. You
have to delete it explicitly.

Sharad

[Rolf Magnus]

EN wrote:

Hi.

I've small problem :
I've two objects, each from another class:
example object a from class A and b from B.
Your example code below only contains the former. Where is object b?
I method from class A :
a.setValue() I made object b:
B *b = new B();

What is happen when in main program I invoke delete to object a,
object b is destroy to???
Well, when you got it from new, it has to be deleted explicitly.
example:

int main(){
A *a = new A();
a->setValue(4);
delete a;
}

[Leon Mergen]

On Tue, 2005-03-15 at 11:57 +0100, EN wrote:

What is happen when in main program I invoke delete to object a,
object b is destroy to???

No, unless you specify it in a constructor. A common design practice I
use is delete an object in the same class as it is created. It avoids
confusion and keeps pointer management centralized.

Leon Mergen
http://www.solatis.com/