What are some common use cases for namespaces in C++?

There are several use cases for using namespaces in C++.

1. Avoid naming conflicts: When different libraries or modules use the same name, you can use namespaces to isolate them and prevent naming conflicts.
2. Organizing Code: Using namespaces can group together related classes, functions, variables, and more, ultimately improving the readability and maintainability of the code.
3. Extension: You can use namespaces to expand existing libraries or modules, adding new features or overloading existing functions.
4. Code splitting: By using namespaces, large codebases can be divided into multiple logical parts, making it easier for teams to collaborate and maintain.
5. Prevent global pollution: Using namespaces can prevent placing all identifiers in the global namespace, reducing the number of global variables and functions, and avoiding global pollution.
6. Implement version control: You can manage different versions of the code using namespaces, allowing for the implementation of different functionalities or bug fixes in different namespaces.

In conclusion, namespaces can modularize, isolate, and organize code, improving its maintainability and scalability.