Question
A member function that allows the user of the class to change the value in a data member is known as a mutator function. a mutation. a manipulator function. an accessor function.
Ask by Frank Colon. in the United States
Jan 21,2025
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Answer
A **mutator function** allows the user to change the value of a data member in a class.
Solution
The correct term for a member function that allows the user of the class to change the value in a data member is known as a **mutator function**.
Here's a brief explanation of the terms for clarity:
- **Mutator Function**: A function that modifies the value of a data member in a class.
- **Accessor Function**: A function that retrieves the value of a data member without modifying it.
- **Mutation**: Generally refers to the act of changing something, but it's not specifically a term used for functions in object-oriented programming.
- **Manipulator Function**: This term is less common and can sometimes refer to functions that manipulate data but is not specifically used for changing data members in the context of classes.
Thus, the answer is **a mutator function**.
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Did you know that the term "mutator function" is derived from the concept of "mutating" or changing the state of an object? It allows users to modify private attributes of a class while still keeping those attributes encapsulated. This practice is fundamental in Object-Oriented Programming as it helps maintain data integrity while allowing flexibility for changes! In real-world applications, mutator functions are commonly used in software that requires user input to update data. For example, in a banking application, a mutator function might update a user's account balance when they make a deposit. This ensures that only valid operations are performed, keeping the data secure and accurate!
