Ch 4/Week 9 Intro to Decision Structures
The ________ operator could be used, in some situations, to simplify nested selection structures. AND All of these OR NOT None of these
AND
What two logical operators perform short-circuit evaluation? NOT and OR All of these None of these AND and NOT AND and OR
AND and OR
Assuming x is 5, y is 6, and z is 8, indicate by circling the T or F whether each of the following relational expressions is true or false: x ==5
True
True/False: A nested decision structure can be used to test more than one condition.
True
True/False: In an expression with an OR operator, it does not matter which sub expression is true for the compound expression to be true.
True
True/False: The If-Then-Else statement can be used to simplify a complex nested decision structure.
True
You can use relational operators to compare strings.
True
The ________ symbol indicates that some condition must be tested in a flowchart. Diamond Parallelogram Rectangle Oval Square
Diamond
Assuming x is 5, y is 6, and z is 8, indicate by circling the T or F whether each of the following relational expressions is true or false: (2 + x) != y
False
Assuming x is 5, y is 6, and z is 8, indicate by circling the T or F whether each of the following relational expressions is true or false: x <= (y * 2)
False
The = operator and the == operator perform the same operation when used in a Boolean expression.
False
The If-Then-Else statement should be used to write a single alternative decision structure.
False
True/False: The If-Then-Else statement should be used to write a single alternative decision structure.
False
A case structure is a ________ alternative decision structure. Single or dual Dual All of these Multiple Single
Multiple
If the expression is false, the ________ operator will return true. None of these AND NOT OR All of these
NOT
Which of the following operators reverses the logic of its operand? None of these OR AND NOT All of these
NOT