An abstract datatype is a data type that is not known to the programmer A. True B. False

Answer Analysis

1. Defining Abstract Data Types: An abstract datatype (ADT) is a type where the implementation is hidden, meaning the user only needs to understand the interface that provides the operations available. This allows the programmer to utilize the data type without needing to know the specific implementation details.

2. Understanding the Statement: The statement claims that an abstract datatype is "not known to the programmer." However, this is misleading. While the internal workings or implementation of the ADT are hidden, the programmer does understand how to interact with it through operations defined in its interface.

3. Evaluating the Options:

   • Option A (True): This suggests that the programmer lacks knowledge about the abstract datatype, which is incorrect.
   • Option B (False): This correctly asserts that the programmer knows how to use the abstract datatype, even if the implementation details are not visible.

Final Answer

The correct answer is B. False. An abstract datatype is known to the programmer through its interface, but the implementation details are hidden.