Compare the overload and override technologies in C.

Overload: Overload is a method used to select which method is used from a group of methods with the same name according to the method signature (type and sequence of parameter lists) at the time of compilation.

Override: Rewrite. In the inheritance system, if the parent class declares a virtual function, the technology that the subclass provides its own implementation to overwrite the implementation of the parent class is called rewrite. The override method will be dynamically bound at runtime to provide polymorphism features.