C + + overloading and overwrite

Overloading: Refers to a subclass that overrides the method of the parent class, overwriting: Referring to the same function, the same argument list, the same return value, but the implementation process is different inside the function.

Overload:

1, the method name must be the same.

2. The parameter list must be different, regardless of the order of the parameter list.

3. The return value type can be different.

Overwrite: The derived class overrides the virtual function of the base class.

1. Only virtual methods and abstract methods can be overwritten.

2, the same function name.

3, the same parameter type.

4. The same return value type.

C + + overloading and overwrite