x const a1; x a2; try this.
On Tue, Jul 12, 2011 at 11:11 PM, shiv narayan <[email protected]>wrote: > cant i invoke both simultaneously?? > if i try to make two objects like > x const a; > x a; > then it gives error..can u explain plz. > > On Jul 12, 9:55 pm, Sandeep Jain <[email protected]> wrote: > > *const* in C++ is not exactly same as *final* in java. SO unlike java > adding > > the keyword const to a function does not affect overriding. > > Infact, adding in C++ const functions ==> that they will not modify any > > member of the class. > > non-const functions cannot be invoked by const objects. > > > > Try making object 'a' as const i.e. > > const x a; > > and then invoke f(), it should invoke the correct version. > > > > Note that C++ allows function overloading based on const-ness. > > Refer (Const function section) > http://www.cprogramming.com/tutorial/const_correctness.html > > Also, subscript operators generally come in pairs, Referhttp:// > www.parashift.com/c++-faq-lite/operator-overloading.html#faq-1...http://www.parashift.com/c++-faq-lite/const-correctness.html#faq-18.12 > > > > Regards, > > Sandeep Jain > > > > On Tue, Jul 12, 2011 at 10:09 PM, dheeraj tyagi <[email protected] > >wrote: > > > > > > > > > > > > > > > > > const means that it cannot be overloaded..i think due to that this is > > > happening. > > > > > On Tue, Jul 12, 2011 at 9:26 PM, segfault <[email protected] > >wrote: > > > > >> #include<iostream> > > >> using namespace std; > > >> class x{ > > >> public: > > >> x() {} > > > > >> int func() const{ > > >> cout<<"it is const function\n"; > > >> } > > > > >> int func() { > > >> cout<<"it is simple functin\n"; > > >> } > > > > >> }; > > >> int main() > > >> { > > >> x a; > > >> a.func(); > > >> return 0; > > >> } > > > > >> why cann't it take const function? > > >> explain it > > > > >> -- > > >> 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. > > > > > -- > > > With regards > > > Dheeraj Tyagi > > > 8197218001 > > > > > -- > > > 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.
