Which of the following are Lexemes?a) Identifiers b) Constants c) Keywords d) All of the mentioned

Analyzing Lexemes

1. Definition of Lexeme: In programming languages, a lexeme is the smallest unit of a program that is meaningful. It is typically a single word or a symbol that can represent various constructs.

2. Identifying Lexemes:

   • a) Identifiers: These are names used to identify variables, functions, arrays, etc., and are considered lexemes.
   • b) Constants: These are fixed values that do not change during the execution of a program (e.g., numbers, strings) and are also lexemes.
   • c) Keywords: These are reserved words in a programming language that have special meanings (e.g., if, else, while) and classify as lexemes.

3. Conclusion: All mentioned options (identifiers, constants, and keywords) indeed fall under the category of lexemes.

Final Answer

d) All of the mentioned are lexemes.