CMPTR Ch. 3 – Flashcards
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Control structure
answer
logical design that
controls order in which set of
statements execute
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Sequence structure
answer
set of statements
that execute in the order they appear
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Decision structure
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specific action(s)
performed only if a condition exists
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Single alternative decision structure
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provides only one alternative path of
execution
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Boolean expression
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expression tested
by if statement to determine if it is true
or false
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Relational operator
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determines
whether a specific relationship exists
between two values
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Dual alternative decision structure
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two
possible paths of execution
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String comparisons are case sensitive
answer
True
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Strings can be compared using >, <, >=,
and <=
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True
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Strings can be compared using the ==
and != operators
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True
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if-elif-else statement
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special
version of a decision structure
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Logical operators
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operators that can
be used to create complex Boolean
expressions
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The and Operator
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Takes two Boolean expressions as
operands
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The or Operator
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Takes two Boolean expressions as
operands
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Short circuit evaluation
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deciding the
value of a compound Boolean
expression after evaluating only one
sub expression
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The not Operator
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Takes one Boolean expressions as
operand and reverses its logical value
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Boolean variable
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references one of two
values, True or False
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Flag
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variable that signals when some
condition exists in a program
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Which logical operators perform short-circuit evaluation?
answer
or, and
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Short-circuit evaluation is performed with the not operator.
answer
False
