@ muthu : not declaring tht function as virtual wont save overriding
class A
{
int a;
public:
void f()
{}
int f2(){}
};
class B:public A
{
public:
void f()
{
cout<<"abc\n";
}
};
int main()
{
B ob;
ob.f();
return 0;
}
in this output is abc..
so overriding occured
On Sun, Jul 31, 2011 at 8:41 PM, muthu raj <[email protected]> wrote:
> Using friend functions we can only invoke already defined private
> functions. We cannot override or prevent overriding using friend functions.
> The problem here is how to prevent base class function from being overridden
> in derived class.
>
> *Muthuraj R
> IV th Year , ISE
> PESIT , Bangalore*
>
>
>
> On Sun, Jul 31, 2011 at 8:04 AM, Anika Jain <[email protected]>wrote:
>
>> what if we write that function as private of base class.. and make a
>> function in derived class that is friend function of the base class do that
>> it can call tht private function of base.??
>>
>>
>> On Sun, Jul 31, 2011 at 8:25 PM, muthu raj <[email protected]> wrote:
>>
>>> Yeah but there is no equivalent of final keyword in c++.....So to prevent
>>> member function from overriding in derived class in c++ dont declare the
>>> member function as virtual. Then it cannot be overridden in derived class.
>>> There is no other way of preventing a member function of base class from
>>> being overridden.
>>>
>>> *Muthuraj R
>>> IV th Year , ISE
>>> PESIT , Bangalore*
>>>
>>>
>>>
>>> On Sun, Jul 31, 2011 at 7:38 AM, himanshu kansal <
>>> [email protected]> wrote:
>>>
>>>> i think there is no keyword known as final in c++.....maybe u are
>>>> talking with respect to java....
>>>>
>>>>
>>>> On Sun, Jul 31, 2011 at 8:03 PM, muthu raj <[email protected]>wrote:
>>>>
>>>>> By declaring the function a static final f().....
>>>>> *Muthuraj R
>>>>> IV th Year , ISE
>>>>> PESIT , Bangalore*
>>>>>
>>>>>
>>>>>
>>>>> On Sun, Jul 31, 2011 at 7:28 AM, himanshu kansal <
>>>>> [email protected]> wrote:
>>>>>
>>>>>> sry i think....i misspelled d ques....
>>>>>> d ques was....
>>>>>>
>>>>>>
>>>>>> how will you protect a derived class to override base class's member
>>>>>> function in c++....
>>>>>>
>>>>>> say if there is a function f() in base class then derived should not
>>>>>> be able to
>>>>>> override f() to provide its own definition.....
>>>>>> but The function must be accessible in derived class.
>>>>>>
>>>>>>
>>>>>> PS:dont try to make the function private in base class( it will be
>>>>>> become inaccessible in derived class).
>>>>>>
>>>>>> On Sun, Jul 31, 2011 at 7:49 PM, himanshu kansal <
>>>>>> [email protected]> wrote:
>>>>>>
>>>>>>> how will you protect a base class to override its member function in
>>>>>>> derived class....
>>>>>>>
>>>>>>> say if there is a function f() in base class then derived cannot
>>>>>>> override f() to provide its own definition.....
>>>>>>> The function must be accessible in derived class.
>>>>>>>
>>>>>>> PS:dont try to make the function private in base class( it will be
>>>>>>> become inaccessible in derived class).
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>>
>>>>>> Regards
>>>>>> Himanshu Kansal
>>>>>> Msc Comp. sc.
>>>>>> (University of Delhi)
>>>>>>
>>>>>>
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>>>>>
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>>>>
>>>>
>>>> --
>>>>
>>>> Regards
>>>> Himanshu Kansal
>>>> Msc Comp. sc.
>>>> (University of Delhi)
>>>>
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