Python Unit 5

The structure that allows you to write one set of instructions that operates on multiple, separate sets of data is the __________.

A. sequence
B. selection
C. loop
D. case

The loop that frequently appears in a program's mainline logic _______.

A. works correctly based on the same logic as other loops
B. is an example of an infinite loop
C. is an unstructured loop
D. always depends on whether a variable equals 0

Which of the following is not a step that must occur with every correctly working loop?

A. Compare the loop control value to a sentinel during each iteration
B. Allow the loop control variable to be altered during each iteration.
C. Set the loop control value equal to a sentinel during each iteration
D. Initialize a loop control variable before the loop starts

The statements executed within a loop are known collectively as the ___________.

A. loop body
B. sequences
C. sentinels
D. loop controls

A counter keeps track of _______________.

A. the number of machine cycles required by a segment of a program
B. the number of loop structures within a program
C. the number of times an event has occurred
D. the number of times software has been revised

Adding 1 to a variable is also called ______________ it.

A. digesting
B. decrementing
C. incrementing
D. resetting

Which of the following is a definite loop?

A. a loop that executes as long as a user continues to enter valid data
B. a loop that executes 1,000 times
C. both of the above
D. none of the above

Which of the following is an indefinite loop?

A. a loop that execute exactly 10 times
B. a loop that follows a prompt that asks a user how many repetitions to make and uses the value to control the loop
C. both of the above
D. none of the above

When two loop are nested, the loop that is contained by the other is the ___________ loop.

A. outer
B. inner
C. captive
D. unstructured

When the loops are nested, ___________.

A. they typically share a loop control variable
B. one must end before the other begins
C. both must be the same type - definite or indefinite
D. none of the above

Most programmers use a for loop ____________.

A. when a loop must repeat many times
B. for every loop they write
C. when they know the exact number of times a loop will repeat
D. when a loop will not repeat

A report that lists only totals, with no details about individual records, is a(n) __________ report.

A. summary
B. group
C. accumulator
D. final

Typically, the value added to a counter variable is _________.

A. different in each iteration
B. 0
C. the same for each iteration
D. 1

Typically, the value added to an accumulator variable is ___________.

A. 0
B. 1
C. different in each iteration
D. the same for each iteration

After an accumulator or counter variable is displayed at the end of a program, it is best to ____________.

A. delete the variable from the program
B. reset the variable to 0
C. subtract 1 from the variable
D. none of the above

When you ___________, you make sure data items are the correct type and fall within the correct range.

A. employ offensive programming
B. use object orientation
C. count loop iterations
D. validate data

Overriding a user's entered value by setting it to a predetermined value is known as __________.

A. accumulating
B. pushing
C. validating
D. forcing

To ensure that a user's entry is the correct data type, frequently you _______________.

A. prompt the user to verify that the type is correct
B. use a method built into the programming language
C. include a statement at the beginning of the program that lists the data types allowed
D. all of the above

A variable might hold an incorrect value even when it is ____________.

A. the correct data type
B. within a required range
C. a constant coded by the programmer
D. all of the above

A do-while loop ____________.

A. has a body that might never execute
B. can be replaced by a sequence and a while loop
C. is a type of pretest loop
D. is not structured, and therefore obsolete