http://www.parashift.com/c++-faq-lite/virtual-functions.html Its one of my favorite sites... :)
Regards, Sandeep Jain On Mon, Jul 11, 2011 at 12:02 AM, himanshu kansal < [email protected]> wrote: > thanku sir...sir 1 more thng....cn u gv a link or some pdf for studying > virtual inheritance elaborating the vptr mechanism more clearly... > > > On Sun, Jul 10, 2011 at 11:56 PM, Sandeep Jain <[email protected]>wrote: > >> The reason is... that when u write >> a obj1=14; >> it is same as writing a obj1 = a(14); >> So first a temporary object is created using the constructor >> a(int i) >> And this temporary object is passed in the copy constructor. BUT since it >> is temp object it must be referred by a const alias. >> >> >> Regards, >> Sandeep Jain >> >> >> >> On Sun, Jul 10, 2011 at 11:52 PM, himanshu kansal < >> [email protected]> wrote: >> >>> a obj3(obj1); but this statement works fine.....so it means it is >>> calling copy constt. perfectly... >>> >>> >>> On Sun, Jul 10, 2011 at 11:49 PM, rahul <[email protected]> wrote: >>> >>>> my bad....add const in copy construcor....i think...that compiler >>>> expect... >>>> >>>> >>>> On Sun, Jul 10, 2011 at 11:48 PM, rahul <[email protected]> wrote: >>>> >>>>> use a(int arg) >>>>> { >>>>> x = arg; >>>>> } >>>>> >>>>> >>>>> ur call will work...:) >>>>> >>>>> >>>>> On Sun, Jul 10, 2011 at 11:46 PM, himanshu kansal < >>>>> [email protected]> wrote: >>>>> >>>>>> class a >>>>>> { >>>>>> int x; >>>>>> public: >>>>>> a() >>>>>> { >>>>>> } >>>>>> a(int i){x=i;cout<<"in a "<<x<<endl;} >>>>>> a(a &obj){cout<<"in copy cons of a"<<endl;} >>>>>> >>>>>> }; >>>>>> >>>>>> a obj1=14; //error no matching call to a::a(a) >>>>>> >>>>>> >>>>>> why..... >>>>>> and just adding a const in the constructor saves me from error...but >>>>>> how.... >>>>>> >>>>>> -- >>>>>> 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. >> > > > > -- > > 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.
