How can I override a function in C++11?

How can I override a function in C++11?

In C++11, you can override a function by using the override keyword in the derived class. This ensures that the function is indeed overriding a base class function.

Can you give me an example of overriding a virtual function?

Sure! Here's a simple example:

class Base {
public:
    virtual void show() { std::cout << "Base class show"; }
};

class Derived : public Base {
public:
    void show() override { std::cout << "Derived class show"; }
};

In this example, show() in Derived overrides the show() in Base.

What happens if I forget to use the override keyword?

If you forget to use the override keyword, the code will still compile, but if the base class function signature changes, the derived class function won't override it, leading to potential bugs.

Are there any other keywords related to function overriding?

Yes, there's also the final keyword, which can be used to prevent further overriding of a virtual function in derived classes.