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Laterix · May 25th, 2006, 3:59 PM

Hi all, I'm new here.

My question is about dynamic binding and polymorphism of the C++. I'm working on my first C++ project. Before I used Java.

So, I have abstract base class that implements some of the functions, but not all. So there are also pure virtual functions in my abstract base class. Now I have function foo() which is implemented in abstract class and function goo() which is pure virtual function.

I get linker error with code like this:

(Toggle Plain Text)

Base::foo()
{
    this->goo();
}

So I'm trying to call undefined function goo, which is defnied in subclasses. Is this just not possible in C++ or am I doing something wrong here? I believe that this is possible in Java.

May 25th, 2006, 3:59 PM	#1
Laterix Newbie Join Date: May 2006 Posts: 3 Rep Power: 0	About pure virtual function calls Hi all, I'm new here. My question is about dynamic binding and polymorphism of the C++. I'm working on my first C++ project. Before I used Java. So, I have abstract base class that implements some of the functions, but not all. So there are also pure virtual functions in my abstract base class. Now I have function foo() which is implemented in abstract class and function goo() which is pure virtual function. I get linker error with code like this: (Toggle Plain Text) Base::foo() { this->goo(); } Base::foo() { this->goo(); } So I'm trying to call undefined function goo, which is defnied in subclasses. Is this just not possible in C++ or am I doing something wrong here? I believe that this is possible in Java.