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Exam 4: Control Structures I: Selection

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Question 31

Multiple Choice

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Which of the following is a relational operator?

A) =
B) ==
C) !
D) &&

E) A) and B)
F) None of the above

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Question 32

True/False

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A program uses selection to implement a branch.

A) True
B) False

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Question 33

True/False

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The method compareTo is part of the class String.

Suppose that you have the following code: int sum = 0; int num = 8; if (num < 0) sum = sum + num; else if (num > 5) sum = num + 15; After this code executes, what is the value of sum?

Based on the code above, what is the value of y if x = 5?

Suppose P and Q are logical expressions. The expression P || Q is true if both P and Q are true.

All switch cases include a break statement.

If str1 is "Hello" and str2 is "Hi", which of the following could not be a result of str1.compareTo(str2) ;?

Including a semicolon before the action statement in a one-way selection causes a syntax error.

All switch structures include default cases.