AP CSA Unit 3 Boolean Expressions

Consider the code assuming that a b c and d are ints, which of the following is an example of short circuit evaluation?

• if a > b is true it doesn't evaluate c == d

• if c == d is false it evaluates a > b

• if a > b is false it doesn't evaluate c == d

• if c == d is true it doesn't evaluate a > b

Just before exiting this program, what are the values of the instance variable value of MultiplyObjects a, b and c?

• 5, 10, 20

• 40, 40, 40

• 40, 10, 40

• 10, 10, 20

The boolean expression (A || B) && A is true

• whenever A is true

• whenever B is true

• whenever either A is true or B is true

• whenever both A is true and B is true

• In all cases

The boolean expression (A && B) && B is true

• whenever A is true

• whenever B is true

• whenever either a is true or B is true

• whenever both A is true and B is true

• In all cases

For what values of n with this code segment generate output?

• for all values of n

• for all even values of n

• for all values of n that are multiples of 3

• for all values of n that are multiples of 6

• for all values of n that are either a multiple of 2 or a multiple of 3.

What is printed as a result of executing the program?

• 10 20

  10 20

• 10 20

  20 10

• 10 10

  20 20

• 20 20

  20 20

• There is no output displayed.

For what values of n will the code segment generate output?

• For all values of n

• For all values of n in the range [20 .. 100]

• For all values of n in the range [51 .. 99]

• For all values of n NOT in the range of [50 .. 100]

• For al values of n NOT in the range of [51 .. 99]

For what values of n will this code segment generate output?

• for all values of n

• for all values of n which are 100 or greater

• for all values of n which are 100 or less

• for all values of n NOT equal to 100

• for n == 100 only

What kind of statement groups several statements together?

• simple

• boolean

• block

• condition

Which if condition correctly checks whether there are sufficient funds in the bank account to withdraw "amount"?

• if (balance = amount)

• if {balance >= amount}

• if [balance >= amount]

• if (balance >= amount)