Description: A member variable is a variable that is declared within a class in C++. These variables are fundamental to object-oriented programming, as they allow for the storage of an object’s state. Each instance of a class can have its own copy of these variables, meaning that each object can maintain its own set of data. Member variables can have different access levels, such as public, private, or protected, which determines how they can be accessed and modified from outside the class. Additionally, member variables can be of any data type, including primitive types, structures, or even other classes. Proper use of member variables is crucial for encapsulating related data and behaviors, thus promoting modularity and code reuse. In summary, member variables are an essential component in defining classes and objects in C++, allowing programmers to effectively model real-world entities.
