What term refers to identifiers that hold data that cannot change during program execution?

What term refers to identifiers that hold data that cannot change during program execution?

• A. Constants
• B. Variables
• C. Objects
• D. Functions

Answer: (A)

Identifiers that hold data that cannot change during program execution are constants. This means once a value is assigned, it is intended to stay the same throughout the run of the program. Languages provide ways to enforce this, such as const or final declarations, or by naming conventions that signal immutability. Using constants improves readability and reliability because you can rely on certain values staying fixed, like configuration limits or mathematical constants. This differs from variables, which are meant to be changed as the program runs. Objects are data structures, and functions are blocks of code; neither term describes values that are guaranteed not to change during execution.

Identifiers that hold data that cannot change during program execution are constants. This means once a value is assigned, it is intended to stay the same throughout the run of the program. Languages provide ways to enforce this, such as const or final declarations, or by naming conventions that signal immutability. Using constants improves readability and reliability because you can rely on certain values staying fixed, like configuration limits or mathematical constants. This differs from variables, which are meant to be changed as the program runs. Objects are data structures, and functions are blocks of code; neither term describes values that are guaranteed not to change during execution.