Function overriding gains significance only when functions are declared
virtual. Otherwise Overriding does not serve any purpose. the main idea
behind virtual functions and method overloading is to implement Dynamic
Polymorphism i.e decide which version of function(base or derived) to be
invoked during runtime.
*Muthuraj R
IV th Year , ISE
PESIT , Bangalore*
On Sun, Jul 31, 2011 at 10:22 AM, Sandeep Jain <sandeep6...@gmail.com>wrote:
> @Pandharinath: Please consider the following e.g.
> class A
> {
> public:
> void func(){ /* A'simplementation */}
> };
>
> class B:public A
> {
> public:
> void func(){/* B's implementation*/ }
> };
>
> What is B's func() doing?
>
>
>
>
> Regards,
> Sandeep Jain
>
>
>
>
> On Sun, Jul 31, 2011 at 10:36 PM, pandharinath gorde <
> pandharinath.go...@gmail.com> wrote:
>
>>
>> sandeep ur misguiding all things are,.
>>
>> for overriding virtual keyword is used that means virtual functions only
>> overriden.
>> In c++ u require to add virtual keyword.
>> and in java every non static function is by default virtual.
>>
>>
>>
>> On Sun, Jul 31, 2011 at 10:23 PM, Sandeep Jain <sandeep6...@gmail.com>wrote:
>>
>>> Overridden functions and virtual functions are two different concepts...
>>> 1) Two functions in the same scope having same but different signatures =
>>> Over Loading
>>> 2) Two functions having same signatures but one defined in parent class
>>> and the other defined in child class == Overriding
>>> 3) Virtual functions, allow for run time polymorphism among overridden
>>> functions.(only when invoked using pointer)
>>>
>>> btw I'm still trying to think if preventing function over-riding is
>>> possible...
>>>
>>>
>>> Regards,
>>> Sandeep Jain
>>>
>>>
>>>
>>>
>>> On Sun, Jul 31, 2011 at 10:13 PM, Ankit Minglani <
>>> ankit.mingl...@gmail.com> wrote:
>>>
>>>> @aditi : in C++ you define a function virtual to let the derived class
>>>> give its own definition for the same. and in that case the functions are
>>>> overridden. unlike in JAVA where no virtual keyword is needed .. so if you
>>>> write the same code as above in java .. that may be referred to as Method
>>>> overriding .. but not in cpp.
>>>>
>>>>
>>>> On Sun, Jul 31, 2011 at 9:34 AM, aditi garg
>>>> <aditi.garg.6...@gmail.com>wrote:
>>>>
>>>>> @ Ankit: Wat is overriding actually thn?
>>>>>
>>>>>
>>>>> On Sun, Jul 31, 2011 at 9:58 PM, Anika Jain <anika.jai...@gmail.com>wrote:
>>>>>
>>>>>> ohkk.. m so sorry
>>>>>>
>>>>>>
>>>>>> On Sun, Jul 31, 2011 at 9:41 PM, Ankit Minglani <
>>>>>> ankit.mingl...@gmail.com> wrote:
>>>>>>
>>>>>>> @anika: This is not function overriding i think .. you cannot call
>>>>>>> the f() function of the base class from the derived class object ..
>>>>>>> what you
>>>>>>> are doing is creating a object of the derived class and calling the
>>>>>>> version
>>>>>>> of f() that belong to derived class B .. ie is the same class object is
>>>>>>> calling the same class function .
>>>>>>>
>>>>>>> correct me if i m wrong .
>>>>>>>
>>>>>>>
>>>>>>> On Sun, Jul 31, 2011 at 8:42 AM, Anika Jain
>>>>>>> <anika.jai...@gmail.com>wrote:
>>>>>>>
>>>>>>>> @ 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 <muthura...@gmail.com>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 <
>>>>>>>>> anika.jai...@gmail.com> 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
>>>>>>>>>> <muthura...@gmail.com>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 <
>>>>>>>>>>> himanshukansal...@gmail.com> 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 <
>>>>>>>>>>>> muthura...@gmail.com> 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 <
>>>>>>>>>>>>> himanshukansal...@gmail.com> 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 <
>>>>>>>>>>>>>> himanshukansal...@gmail.com> 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)
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> --
>>>>>>>>>>>>>> You received this message because you are subscribed to the
>>>>>>>>>>>>>> Google Groups "Algorithm Geeks" group.
>>>>>>>>>>>>>> To post to this group, send email to
>>>>>>>>>>>>>> algogeeks@googlegroups.com.
>>>>>>>>>>>>>> To unsubscribe from this group, send email to
>>>>>>>>>>>>>> algogeeks+unsubscr...@googlegroups.com.
>>>>>>>>>>>>>> For more options, visit this group at
>>>>>>>>>>>>>> http://groups.google.com/group/algogeeks?hl=en.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> --
>>>>>>>>>>>>> You received this message because you are subscribed to the
>>>>>>>>>>>>> Google Groups "Algorithm Geeks" group.
>>>>>>>>>>>>> To post to this group, send email to
>>>>>>>>>>>>> algogeeks@googlegroups.com.
>>>>>>>>>>>>> To unsubscribe from this group, send email to
>>>>>>>>>>>>> algogeeks+unsubscr...@googlegroups.com.
>>>>>>>>>>>>> For more options, visit this group at
>>>>>>>>>>>>> http://groups.google.com/group/algogeeks?hl=en.
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> --
>>>>>>>>>>>>
>>>>>>>>>>>> Regards
>>>>>>>>>>>> Himanshu Kansal
>>>>>>>>>>>> Msc Comp. sc.
>>>>>>>>>>>> (University of Delhi)
>>>>>>>>>>>>
>>>>>>>>>>>> --
>>>>>>>>>>>> You received this message because you are subscribed to the
>>>>>>>>>>>> Google Groups "Algorithm Geeks" group.
>>>>>>>>>>>> To post to this group, send email to algogeeks@googlegroups.com
>>>>>>>>>>>> .
>>>>>>>>>>>> To unsubscribe from this group, send email to
>>>>>>>>>>>> algogeeks+unsubscr...@googlegroups.com.
>>>>>>>>>>>> For more options, visit this group at
>>>>>>>>>>>> http://groups.google.com/group/algogeeks?hl=en.
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> --
>>>>>>>>>>> You received this message because you are subscribed to the
>>>>>>>>>>> Google Groups "Algorithm Geeks" group.
>>>>>>>>>>> To post to this group, send email to algogeeks@googlegroups.com.
>>>>>>>>>>> To unsubscribe from this group, send email to
>>>>>>>>>>> algogeeks+unsubscr...@googlegroups.com.
>>>>>>>>>>> For more options, visit this group at
>>>>>>>>>>> http://groups.google.com/group/algogeeks?hl=en.
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> --
>>>>>>>>>> You received this message because you are subscribed to the Google
>>>>>>>>>> Groups "Algorithm Geeks" group.
>>>>>>>>>> To post to this group, send email to algogeeks@googlegroups.com.
>>>>>>>>>> To unsubscribe from this group, send email to
>>>>>>>>>> algogeeks+unsubscr...@googlegroups.com.
>>>>>>>>>> For more options, visit this group at
>>>>>>>>>> http://groups.google.com/group/algogeeks?hl=en.
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>> --
>>>>>>>>> You received this message because you are subscribed to the Google
>>>>>>>>> Groups "Algorithm Geeks" group.
>>>>>>>>> To post to this group, send email to algogeeks@googlegroups.com.
>>>>>>>>> To unsubscribe from this group, send email to
>>>>>>>>> algogeeks+unsubscr...@googlegroups.com.
>>>>>>>>> For more options, visit this group at
>>>>>>>>> http://groups.google.com/group/algogeeks?hl=en.
>>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>> You received this message because you are subscribed to the Google
>>>>>>>> Groups "Algorithm Geeks" group.
>>>>>>>> To post to this group, send email to algogeeks@googlegroups.com.
>>>>>>>> To unsubscribe from this group, send email to
>>>>>>>> algogeeks+unsubscr...@googlegroups.com.
>>>>>>>> For more options, visit this group at
>>>>>>>> http://groups.google.com/group/algogeeks?hl=en.
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> The more you sweat in the field, the less you bleed in war."
>>>>>>>
>>>>>>> Ankit Minglani
>>>>>>> NITK Surathkal
>>>>>>>
>>>>>>> --
>>>>>>> You received this message because you are subscribed to the Google
>>>>>>> Groups "Algorithm Geeks" group.
>>>>>>> To post to this group, send email to algogeeks@googlegroups.com.
>>>>>>> To unsubscribe from this group, send email to
>>>>>>> algogeeks+unsubscr...@googlegroups.com.
>>>>>>> For more options, visit this group at
>>>>>>> http://groups.google.com/group/algogeeks?hl=en.
>>>>>>>
>>>>>>
>>>>>> --
>>>>>> You received this message because you are subscribed to the Google
>>>>>> Groups "Algorithm Geeks" group.
>>>>>> To post to this group, send email to algogeeks@googlegroups.com.
>>>>>> To unsubscribe from this group, send email to
>>>>>> algogeeks+unsubscr...@googlegroups.com.
>>>>>> For more options, visit this group at
>>>>>> http://groups.google.com/group/algogeeks?hl=en.
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Aditi Garg
>>>>> Undergraduate Student
>>>>> Electronics & Communication Divison
>>>>> NETAJI SUBHAS INSTITUTE OF TECHNOLOGY
>>>>> Sector 3, Dwarka
>>>>> New Delhi
>>>>>
>>>>>
>>>>> --
>>>>> You received this message because you are subscribed to the Google
>>>>> Groups "Algorithm Geeks" group.
>>>>> To post to this group, send email to algogeeks@googlegroups.com.
>>>>> To unsubscribe from this group, send email to
>>>>> algogeeks+unsubscr...@googlegroups.com.
>>>>> For more options, visit this group at
>>>>> http://groups.google.com/group/algogeeks?hl=en.
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> The more you sweat in the field, the less you bleed in war."
>>>>
>>>> Ankit Minglani
>>>> NITK Surathkal
>>>>
>>>> --
>>>> You received this message because you are subscribed to the Google
>>>> Groups "Algorithm Geeks" group.
>>>> To post to this group, send email to algogeeks@googlegroups.com.
>>>> To unsubscribe from this group, send email to
>>>> algogeeks+unsubscr...@googlegroups.com.
>>>> For more options, visit this group at
>>>> http://groups.google.com/group/algogeeks?hl=en.
>>>>
>>>
>>> --
>>> You received this message because you are subscribed to the Google Groups
>>> "Algorithm Geeks" group.
>>> To post to this group, send email to algogeeks@googlegroups.com.
>>> To unsubscribe from this group, send email to
>>> algogeeks+unsubscr...@googlegroups.com.
>>> For more options, visit this group at
>>> http://groups.google.com/group/algogeeks?hl=en.
>>>
>>
>>
>>
>> --
>> Pandharinath Gorde
>> +91-9620557641
>>
>> --
>> You received this message because you are subscribed to the Google Groups
>> "Algorithm Geeks" group.
>> To post to this group, send email to algogeeks@googlegroups.com.
>> To unsubscribe from this group, send email to
>> algogeeks+unsubscr...@googlegroups.com.
>> For more options, visit this group at
>> http://groups.google.com/group/algogeeks?hl=en.
>>
>
> --
> You received this message because you are subscribed to the Google Groups
> "Algorithm Geeks" group.
> To post to this group, send email to algogeeks@googlegroups.com.
> To unsubscribe from this group, send email to
> algogeeks+unsubscr...@googlegroups.com.
> For more options, visit this group at
> http://groups.google.com/group/algogeeks?hl=en.
>
--
You received this message because you are subscribed to the Google Groups
"Algorithm Geeks" group.
To post to this group, send email to algogeeks@googlegroups.com.
To unsubscribe from this group, send email to
algogeeks+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/algogeeks?hl=en.
