yes Sandeep(sir) is perfectly right , if we definig a base class function in derived with exactly same function signature , the function in derived class said to override the function in base class, does nt matter whether it is virtual or not.
On Sun, Jul 31, 2011 at 10:22 AM, Sandeep Jain <[email protected]>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 < > [email protected]> 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 <[email protected]>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 < >>> [email protected]> 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 >>>> <[email protected]>wrote: >>>> >>>>> @ Ankit: Wat is overriding actually thn? >>>>> >>>>> >>>>> On Sun, Jul 31, 2011 at 9:58 PM, Anika Jain <[email protected]>wrote: >>>>> >>>>>> ohkk.. m so sorry >>>>>> >>>>>> >>>>>> On Sun, Jul 31, 2011 at 9:41 PM, Ankit Minglani < >>>>>> [email protected]> 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 >>>>>>> <[email protected]>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 <[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) >>>>>>>>>>>>>> >>>>>>>>>>>>>> >>>>>>>>>>>>>> -- >>>>>>>>>>>>>> You received this message because you are subscribed to the >>>>>>>>>>>>>> Google Groups "Algorithm Geeks" group. >>>>>>>>>>>>>> To post to this group, send email to >>>>>>>>>>>>>> [email protected]. >>>>>>>>>>>>>> To unsubscribe from this group, send email to >>>>>>>>>>>>>> [email protected]. >>>>>>>>>>>>>> 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 >>>>>>>>>>>>> [email protected]. >>>>>>>>>>>>> To unsubscribe from this group, send email to >>>>>>>>>>>>> [email protected]. >>>>>>>>>>>>> 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 [email protected] >>>>>>>>>>>> . >>>>>>>>>>>> To unsubscribe from this group, send email to >>>>>>>>>>>> [email protected]. >>>>>>>>>>>> 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 [email protected]. >>>>>>>>>>> To unsubscribe from this group, send email to >>>>>>>>>>> [email protected]. >>>>>>>>>>> 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 [email protected]. >>>>>>>>>> To unsubscribe from this group, send email to >>>>>>>>>> [email protected]. >>>>>>>>>> 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 [email protected]. >>>>>>>>> To unsubscribe from this group, send email to >>>>>>>>> [email protected]. >>>>>>>>> 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 [email protected]. >>>>>>>> To unsubscribe from this group, send email to >>>>>>>> [email protected]. >>>>>>>> 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 [email protected]. >>>>>>> To unsubscribe from this group, send email to >>>>>>> [email protected]. >>>>>>> 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 [email protected]. >>>>>> To unsubscribe from this group, send email to >>>>>> [email protected]. >>>>>> 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 [email protected]. >>>>> To unsubscribe from this group, send email to >>>>> [email protected]. >>>>> 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 [email protected]. >>>> To unsubscribe from this group, send email to >>>> [email protected]. >>>> 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 [email protected]. >>> To unsubscribe from this group, send email to >>> [email protected]. >>> 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 [email protected]. >> To unsubscribe from this group, send email to >> [email protected]. >> 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 [email protected]. > To unsubscribe from this group, send email to > [email protected]. > 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 [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.
