C++: Namespace vs Class

What is the difference between a namespace and a class in C++?

A namespace is used to organize code and prevent name collisions, while a class is a blueprint for creating objects.

Can you give me an example of when to use a namespace?

Sure! Use a namespace when you have multiple libraries that might have functions with the same name, to avoid conflicts.

What about classes? When should I use them?

Use classes when you want to create objects that encapsulate data and behavior, allowing for object-oriented programming.

Are there any performance differences between using namespaces and classes?

Generally, namespaces have no performance overhead, while classes can introduce overhead due to object instantiation.

Can I use a class inside a namespace?

Yes, you can define a class within a namespace to keep it organized and avoid naming conflicts.