functions

[meenakshipahwa]

y should we initialize any function like below -

virtual bool is_available () const =0;

[Texan40]

that would be a pure virtual function and it would be used as a member function in an abstract base class.

[meenakshipahwa]

is it possible to declare that virtual function in any header file and then use that function in other .cpp file without defining it? i am using visual C++ with visual studio 2008.

[hamsterman]

As long as you put that function in a class, include the header in the cpp and derive a class that overwrites this method, yes.

[meenakshipahwa]

then is it compulsary to initialize them to zero. can it also be done by only declaring and not initializing.........................

[hamsterman]

That "=0" bit is a special syntax that doesn't have anything to do with zeros or initialization. If you exclude it, I think you'll have to define this function.

[meenakshipahwa]

thanks