在物件導向程式設計中，重寫(*override*)是一個非常重要的關鍵字。它指的是子類別可以在已存在的父類別函數中重新定義或重新實現。這種技術讓我們可以根據需要在不同的類別中重新定義函數，從而實現多態性。
另一個常見的關鍵字是靜態(*static*)。在程式設計中，靜態可以用於定義靜態變數或函數，這些變數和函數不需要實例化對象就可以訪問。靜態成員是屬於整個類別而不是特定的實例。
常數(*const*)是一個不可改變的值，在程式執行期間會被固定。使用常數可以確保程式的穩定性和可靠性。常數可以在程式中使用，但無法被修改。
虛擬(*virtual*)是另一個重要的關鍵字，它用於定義虛擬函數。虛擬函數可以在父類中被定義，在子類中進行重寫(*override*)。這樣做可以實現多態性，子類可以根據需要修改函數的行為。
最後，類(*class*)是物件導向程式設計中最基本的概念之一。類代表一組具有相同屬性和行為的對象。通過定義類，我們可以創建具有相似結構和行為的對象。
關鍵字: override, static, const, virtual, class
Title: Keywords in Object-Oriented Programming
Article: In object-oriented programming, *override* is a very important keyword. It refers to the ability of a subclass to redefine or reimplement functions that already exist in the parent class. This technique allows us to redefine functions in different classes as needed, enabling polymorphism.
Another common keyword is *static*. In programming, static can be used to define static variables or functions that can be accessed without instantiating an object. Static members belong to the entire class rather than a specific instance.
*Const* is a keyword referring to a value that cannot be changed and remains fixed during program execution. Using constants ensures the stability and reliability of the program. Constants can be used within a program but cannot be modified.
*Virtual* is another important keyword used to define virtual functions. Virtual functions are defined in the parent class and can be overridden in a subclass. This allows for polymorphism, where subclasses can modify the behavior of functions as needed.
Finally, *class* is one of the fundamental concepts in object-oriented programming. A class represents a group of objects with similar properties and behaviors. By defining classes, we can create objects with similar structures and behaviors.
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