1.1.6 Conditional Expressions and Predicates

Question 1

A special form in Lisp for notating a case analysis

Answer 1

cond

Question 2

Parenthesized pairs of expressions used in a conditional statement (i.e. cond (<p> <e>))</e>

Answer 2

clauses

Question 3

The first expression in a pair or clause whose value is evaluated as true or false

Answer 3

predicate

Question 4

The value that is returned by the interpreter when a predicate is found whose value is true

Answer 4

consequent expression

(if none of the predicates is found to be true, cond is undefined)

Question 5

Procedures that return true or false, as well as expressions that evaluate to true or false.

Answer 5

predicate

Question 6

A restricted type of conditional that can be used when there are precisely two cases in the case analysis.

Answer 6

if

(if <predicate> <consequent> <alternative>)</alternative></consequent></predicate>

Question 7

The three most frequently used logical composition operations that enable the construction of compound predicates.

Answer 7

and, or, not

Question 8

And and or are special forms but not is an ordinary procedure. Why?

Answer 8

Because with and and or the subexpressions are not necessarily all evaluated.