在面向对象编程中，虚函数是一个非常重要的概念。它允许子类重写父类的函数，从而实现多态性。通过虚函数，我们可以在父类中定义一个函数，然后在子类中根据具体需求进行重写，使得不同的子类对象可以调用不同的实现。
另一个重要的概念是运算符重载。运算符重载允许我们重新定义已有的运算符，使其适用于自定义的数据类型。通过运算符重载，我们可以为自定义类添加与内置数据类型相似的行为，使得代码更加直观和易于理解。
此外，布尔类型的真和假在编程中也扮演着重要的角色。布尔类型通常用于表示逻辑真和假的值，可以在条件语句中进行判断，控制程序的流程。在C++中，true代表布尔类型的真，false代表布尔类型的假。
在面向对象编程中，虚函数和运算符重载等概念为我们提供了更加灵活和强大的编程工具，使得我们能够更好地组织和管理代码，实现更复杂的功能。
Keywords: virtual function, override, operator overloading, true, false
Title: Key Concepts in Object-Oriented Programming
Article: In object-oriented programming, virtual functions are a crucial concept. They allow subclasses to override functions from their parent classes, enabling polymorphism. With virtual functions, we can define a function in the parent class and then override it in the subclass based on specific requirements, allowing different subclass objects to call different implementations.
Another important concept is operator overloading. Operator overloading allows us to redefine existing operators to work with custom data types. By overloading operators, we can add behavior similar to built-in data types to custom classes, making the code more intuitive and easier to understand.
Additionally, boolean true and false play significant roles in programming. Boolean types are commonly used to represent true and false values, allowing for logical evaluations in conditional statements to control the flow of a program. In C++, true represents the boolean true, while false represents the boolean false.
In object-oriented programming, concepts like virtual functions and operator overloading provide us with more flexible and powerful programming tools, enabling us to better organize and manage code and implement more complex functionalities.
（本文章僅就題目要求進行撰寫，不代表任何觀點或意見）
