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vtable

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Join Date: Jul 2005

Posts: 1

Reputation: durga prasad d is an unknown quantity at this point

Solved Threads: 0

durga prasad d durga prasad d is offline

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Newbie Poster

vtable

Jul 7th, 2005

Hi all,
What is vtable ?
How many vtables created for this sample.

 Help with Code Tags 
 C++ Syntax (Toggle Plain Text) 
class A
{
     virtual void myFunc() = 0;
};
class B : public A
{
     virtual void myFunc() = 0;
};
 
class C: pulibc B
{
     void myFunc() 
     {
         cout <<"MyFunc"<<endl;
     }
};
 
void main(void)
{
     C c;
     c.myFunc();
}
class A
{
     virtual void myFunc() = 0;
};
class B : public A
{
     virtual void myFunc() = 0;
};

class C: pulibc B
{
     void myFunc() 
     {
         cout <<"MyFunc"<<endl;
     }
};

void main(void)
{
     C c;
     c.myFunc();
}

<< moderator edit: added [code][/code] tags >>

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Join Date: Sep 2004

Posts: 7,652

Reputation: Narue has a reputation beyond repute

Solved Threads: 723

Narue

Offline

Code Goddess

Re: vtable

Jul 7th, 2005

>What is vtable ?
A fancy term for an array of function pointers.

>How many vtables created for this sample.
Maybe none. The virtual mechanism doesn't have to be implemented using the vtable concept. However, if it did, the answer would probably be one, but it's implementation-defined.

I'm here to prove you wrong.