Concepts Of Programming Languages Questions And Answers 100% Verified A+ Guaranteed

What does compile-time type checking do?3 {Ans: -Allow a single type for each expression - Check for type consistency of each operator at compile time - Report where in source code the error is found}Given a BNF, e ::= n | e+e | e-e | e * e | (e) which describes the syntax of expressions, identify the following components of the BNF: Non-Terminals (Variables representing concepts): Terminals (Vocabulary of the language): Start Non-Terminal (The top-level concept of a language): Productions (Rules of composing the language): {Ans: Non-Terminals (Variables representing concepts): e Terminals (Vocabulary of the language): n + - * ( ) Start Non-Terminal (The top-level concept of a language): e Productions (Rules of composing the language): e::=n; e::=e+e; e::=e-e; e::=e*e; e ::= (e)}What does runtime type checking do? 3 {Ans: -Dynamically store the type of each value -Check the type of each value before operating on it - Catch all all type errors at runtime before they occur}Which of the following is an example of reflective programming? {Ans: Build a Lisp expression as a list and then invoke the eval command to interpret it}7. What is the biggest difference between a compiled language and