Quiz #2

(Last Mod: 27 November 2010 21:38:41 )

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NO CALCULATORS MAY BY USED ON THIS QUIZ

1. Which of the following are all pairs of complementary operators?

   1. (||, &&), (+, -), (/, /%).

   2. (==, !=), (>, <), (=, <=).

   3. (<=, >), (!=, ==), (>, <=). <===

   4. (!, ~), (|, ||), (&, &&).

    

2. Which of the following statements is NOT true?

   1. Logical and relational operators always return a value of 1 if the expression is True

   2. Negative values cannot be used or interpreted as logical values. <===

   3. A value is considered a logical False only if it evaluates exactly to zero.

   4. Functions that return logical results may return values other than a 0 or a 1.

    

3. What are the three building blocks of a structured program?

   1. for() loops, while() loops, and do/while() loops.

   2. Statements, functions, and files.

   3. Loads, stores, and branches.

   4. Sequences, selections, and repetitions. <===

    

4. What is the category that ASCII codes fall into if they are printing characters but are not alphanumeric?

   1. punctuation characters. <===

   2. control characters.

   3. white space.

   4. escape sequences.

    

5. Why is it considered a bad idea to use floating point data as operands to logical or equality/inequality operators?

   1. Because these operators are only defined for integer operands.

   2. Because floating point values are almost guaranteed to evaluate as False and/or not equal. <===

   3. Because any value less than some pre-defined amount will be considered False.

   4. Because zero cannot be exactly represented by a floating point value.