What are some examples of type casting in C++?

What are some examples of type casting in C++?

In C++, type casting allows you to convert a variable from one type to another. Common examples include static_cast, dynamic_cast, const_cast, and reinterpret_cast.

Can you explain static_cast with an example?

Sure! static_cast is used for converting between types that are related by inheritance. For example:

class Base {};
class Derived : public Base {};

Derived d;
Base* b = static_cast<Base*>(&d);

What about dynamic_cast? How is it different?

dynamic_cast is used for safely downcasting in polymorphic class hierarchies. It checks at runtime if the cast is valid. For example:

Base* b = new Derived();
Derived* d = dynamic_cast<Derived*>(b);
if (d) {
    // Successful cast
}

Are there any risks with using reinterpret_cast?

Yes, reinterpret_cast can be dangerous as it allows you to convert any pointer type to any other pointer type without type safety. It should be used with caution.