What term describes names used to identify variables, functions, and other entities in programming?

What term describes names used to identify variables, functions, and other entities in programming?

• A. Keywords
• B. Operators
• C. Literals
• D. Identifiers

Answer: (D)

Identifiers are the names programmers use to label variables, functions, classes, and other program elements. They let you refer to a piece of data or a callable unit by a human-friendly name, like count, calculateTotal, or userName. They must follow language rules—starting with a letter or underscore, and then letters, digits, or underscores, with case sensitivity in many languages. Because these names are how you reference items in code, they’re essential for writing readable and maintainable programs. Keywords are reserved words with special meaning and can’t be used as identifiers, while operators perform actions and literals represent fixed values.

Identifiers are the names programmers use to label variables, functions, classes, and other program elements. They let you refer to a piece of data or a callable unit by a human-friendly name, like count, calculateTotal, or userName. They must follow language rules—starting with a letter or underscore, and then letters, digits, or underscores, with case sensitivity in many languages. Because these names are how you reference items in code, they’re essential for writing readable and maintainable programs. Keywords are reserved words with special meaning and can’t be used as identifiers, while operators perform actions and literals represent fixed values.