Answer / nidhi singh

no, we cann't hav private virtual method as virtual is used
in case of inheritance but private members cannot be
inherited..

Answer / rajendra gandhi

No, we can't have private vitual method.

Answer / edward

yes... we can have private virtual method and will not give
any compile time/runtime error. but there is no use of it.
we could not call the method from out side of the class

Answer / nk

We can have virtual functions as long as we dont call the
function from a base pointer pointing to the base
class/derived class.

If we call then gives error.

The same error can be tested by compiling and running above
example.

Answer / sriram

We can have the private virtual method. But it can be
accessed only through the derived class not through the
base class.

class A
{
private:
virtual void fun() { std::cout << "A::fun" <<
std::endl; }

};

class B : public A
{
public:
virtual void fun() { std::cout << "B::fun" <<
std::endl; }

};

int main(int argc, char* argv[])
{
A* pa = new A();
((B*)(pa))->fun();
}

Output : A::fun

Answer / ganesh mishra

yes... we can have private virtual method and will not give
any compile time/runtime error.but when we derive any class
from it and override the virtual function,then the compiler
will throw a compile time error.

//file name is privatever.cpp

#include <iostream>
using namespace std;

class base
{
virtual void fun()
{
cout <<"base class function"<<endl;
}

};

class derive: public base
{
public:
virtual void fun()
{
cout<<"derived class function"<<endl;
}
};

int main()
{
base *pt;
derive *der = new derive;
pt = der;
pt->fun();
return(0);
}

here is the error
privatever.cpp: In function ‘int main()’:
privatever.cpp:6: error: ‘virtual void base::fun()’ is private
privatever.cpp:27: error: within this context

Answer / narasimulu

No we can't have private virtual method

Answer / gopinath das

Yes , It we can have a private virtual method. It has
nothing to do with inheritance. It only resolve the dynamic
binding . Only difference is that , this method should be
used inside the class defination of the Base .
The derived class may implements the method either
public,private or protected.
Exa:

class A
{
virtual void x(){cout<<"A"<<endl;};
public:
};
class B:public A
{
//virtual void x(){cout<<"B"<<endl;}; // no prob
public:
virtual void x(){cout<<"B"<<endl;};
};
int main()
{
A *a;
B *b=new B;
a=b;
a->fn();
}
Out put:
B

What are the benefits of interface?

0 Answers  

What is virtual Function.

1 Answers   Wipro,

The IT giant Tirnop has recently crossed a head count of 150000 and earnings of $7 billion. As one of the forerunners in the technology front, Tirnop continues to lead the way in products and services in India. At Tirnop, all programmers are equal in every respect. They receive identical salaries and also write code at the same rate. Suppose 14 such programmers take 14 minutes to write 14 lines of code in total. How long will in take 5 programmers to write 5 lines of code in total ?

6 Answers   TCS,

What is Difference Between Inheritance and creating object and getting data? means Class A extends B{ B.getMethod();} (OR) Class A{ b obj=new B(); obj.getMethod(); }

0 Answers   SRA,

write a code for this. serial_number contained in the header of the file will be read , if this serial number is less than a previous serial number within a successfully processed file, or is the same as another serial number within a successfully processed file, or if the field contains anything other than 7 digits, then the file must error with the reason ‘Invalid SERIAL_NUMBER’.

0 Answers   Microsoft, TCS,

What is object and example?

0 Answers  

write a c++ code of diagonal matrix.

2 Answers  

What is stream in oop?

0 Answers  

what is the size of an empty class

12 Answers   Wipro,

In OverLoading concept,Why they are not consider return value and why they are consider only parameters in method? For ex: public int Add(int a,int b){...} public String Add(int a,int b){...}

1 Answers  

what is graphics

0 Answers  

Explain the concept of abstracion and encapsulation with one example. What is the difference between them?

3 Answers   PCS,