21.Denotational semantics are based on the formal mathematical model called the ______.

Algebraic calculus

Lambda calculus

analytic calculus

predicate calculus

22. Consider the following statements: typedef struct A {int B; float C;} D; D E; What is the type of E?

struct A

struct D

struct E

struct B

23. Given the regular grammar: S -> aS | bS | a

give the derivation for: abaaba: __________

S => aS => abS => abaS => abaaS => abaabS => abaaba

S => aS => aSa => abaS => ababS => abaabS => abaaba

S => aS => abS => abaS => ababS => bbaabS => abaaba

S => aS => abS => abaS => abaaS => Sabaab => abaaba

24. Generic classes in C++ are created using the structure called a ______.

classes

template

inheritance

polymorphism

25. If in evaluating A and B, A being false causes B not to be evaluated, is an example of ______ evaluation.

long-circuit

short-circuit

prefix

postfix