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Test Bank for Prelude to Programming Chapter 3

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1 Test Bank for Prelude to Programming Chapter 3 MULTIPLE CHOICE 1. Which of the following is not a type of selection structure? a. single-alternative b. dual-alternative c. multiple-alternative d. Case or switch e. all of the above are types of selection structures ANS: E 2. Given the following program segment, what is the test condition? 1. Input Answer 2. If Answer = No Then 3. Write Try Again 4. Input Answer Write Are you having fun yet? (Y/N) 7. Input Response a. Answer b. Answer = No c. Response d. Response = Y 3. Given the following program segment, if the user inputs Hooray! on Line 1, what is the next line to be executed? 1. Input Answer 2. If Answer = No Then 3. Write Try Again 4. Input Answer Write Are you having fun yet? 7. Input Response a. Line 2 b. Line 3 c. Line 5 d. Line 6 ANS: A 2007 Pearson Education 1

2 4. What is the output of code corresponding to the following program segment if Age = 18? If Age >= 18 Then Write You are eligible to vote. Set Vote = Age - 18 Write You can vote in, Vote, years. a. You are eligible to vote. b. You can vote in 18 years. c. You are eligible to vote. You can vote in 18 years. d. You can vote in 0 years. ANS: A 5. If MyName = Bunny and YourName = Buddy, which of the following is not true? a. MyName > YourName b. MyName <= YourName c. MyName >= YourName d. YourName > MyName 6. If X = True and Y = False, which of the following will give a result of True? a. X AND Y b. X OR Y c. NOT X OR Y d. NOT X AND NOT Y 7. If X = 2, Y = 4, and Z = 6, which of the following will give a result of False? a. (X < Y) AND (Y < Z) b. (Y > X) AND (Z > X) c. (X > Y * Z) OR (X * Y > Z) d. (X > Y * Z) OR (Z > X * Y) ANS: D 2007 Pearson Education 2

3 8. Given that Jamie worked 50 hours (Hours = 50) last week and earns $10.00 an hour (Rate = 10), how much did Jamie earn last week, before taxes (TotalPay)? If (Rate >=10) OR (Hours <=40) Then TotalPay = Hours * Rate TotalPay = (Hours * Rate)+(Hours 40)*Rate*1.5 a. $ 500 b. $ 650 c. $ 750 d. $ 400 ANS: A 9. Given that Marcy worked 42 hours (Hours = 42) last week and earns $10.00 an hour (Rate = 10), how much did Jamie earn last week, before taxes (TotalPay)? If (Rate >=10) AND (Hours <=40) Then TotalPay = Hours * Rate TotalPay = (40 * Rate)+(Hours 40) * Rate * 1.5 a. $ 500 b. $ 420 c. $ 430 d. $ 650 ANS: C 10. Given that the user input for Response is Open Sesame and Guess = Open Sesame, what would be displayed if code corresponding to the following program segment were run? Input Response Select Case Of Response Case: new Write You re a newbie Case: 23 Write You re Number 23 Case: Guess Write The door to Sesame Street is open! Default Write Huh? End Case a. You re a newbie b. You re Number 23 c. The door to Sesame Street is open! 2007 Pearson Education 3

4 d. Huh? e. Nothing would be displayed since Response is not one of the conditions in the Case statement. ANS: C 11. The term defensive programming refers to all of the following except: a. ensuring that a division by zero does not take place b. ensuring that input data is within the proper range c. ensuring that there are no compound conditions in a selection structure d. ensuring that a negative number is not input to the Sqrt function ANS: C 12. A multiple-alternative structure cannot be implemented by using which of the following: a. a single If-Then statement b. several If-Then statements c. several If-Then- statements d. a single Case statement ANS: A 13. Given the following program, choose the line necessary to replace the XXXX s so that the program segment will ensure that an illegal operation does not occur. Write Enter a number: Write This program will display the square root Write of your number. Input MyNumber XXXXXXXXXXXXXXXXXX Write The square root of, MyNumber Write is:, Sqrt(MyNumber) Write Illegal operation! a. If MyNumber < 0 b. If MyNumber <= 0 c. If MyNumber >= 0 d. If MyNumber <> 0 ANS: C 14. Which of the following will test to make sure the number entered by the user into the variable named InRange is between 5 and 50? a. If (InRange > 5) AND (InRange < 50) Then b. If (InRange >= 5) AND (InRange <= 50) Then 2007 Pearson Education 4

5 c. If (InRange > 5) OR (InRange < 50) Then d. If (InRange >= 5) OR (InRange <= 50) Then 15. Which of the following program segments is equivalent to the program segment given below? If Pay >= 500 Then TaxRate =.3 If (Pay >= 300) AND (Pay < 500) Then TaxRate =.2 If (Pay >= 100) AND (Pay < 300) Then TaxRate =.1 a. If Pay > 100 Then TaxRate =.1 If Pay > 300 Then TaxRate =.2 If Pay > 500 Then TaxRate =.3 b. If Pay >= 500 Then TaxRate =.3 If Pay >= 300 TaxRate =.2 TaxRate =.1 c. If Pay >= 500 Then TaxRate =.3 TaxRate =.2 If Pay > 100 Then TaxRate =.1 d. none of the above are equivalent to the given example 2007 Pearson Education 5

6 TRUE/FALSE 1. True/False: A single-alternative selection structure always contains an clause. 2. True/False: The assignment operator and the comparison operator are the same. 3. True/False: The statement Set Cost = Price + Tax is an example of a comparison statement. 4. True/False: The statement 15 >= -63 will result in the value True. 5. True/False: If X = False and Y = False, is the statement NOT X OR NOT Y true or false? 6. True/False: Suppose MyNumber = 6. Is the following expression True or False? (2 * MyNumber 4 > 6 ) AND (MyNumber < 10) 7. True/False: If A = 20 and B = 15, then both of the following statements are True: A > B and B <= A 8. True/False: The type of operators that are evaluated second in the hierarchy of order of operations are logical operators. 9. True/False: The Case statement can only be used to compare numeric data. 10. True/False: The integer 16 does not have a reciprocal. 11. True/False: If a division operation is performed in a program and the divisor is 0, execution will halt and an error message will be displayed. 12. True/False: Defensive programming includes checking for the illegal operation of trying to take the square root of zero. 13. True/False: A program that uses menus instead of requiring the user to memorize commands is often known as a menu-driven program Pearson Education 6

7 14. True/False: If A = 9, then Sqrt(A * A) = True/False: In a menu-driven program, the options on the main module usually correspond to separate program modules. SHORT ANSWER 1. A selection structure consists of a(n) together with one or more blocks of statements. ANS: test condition 2. A statement which checks to see if the value of the expression on the left side is the same as the value of the expression on the right side is an example of the use of the operator. ANS: comparison 3. Two strings are if they contain exactly the same characters in the same order. ANS: equal 4. A(n) is used to summarize the actions of the logical operators. ANS: truth table 5. Logical operators are used to create conditions from given conditions. ANS: compound, simple 6. In the hierarchy of the order of operations, operations are performed first. ANS: arithmetic 7. Some programming languages allow variables to be of logical or type. oolean 8. The >= is one of the operators. ANS: relational 9. The multiple-alternative selection structure that does not use an If-Then- clause is the or statement. ANS: Case, Switch 10. Including statements in a program to check for improper data during execution of the program is known as programming. ANS: defensive 11. The program segment that catches a division by zero is known as a(n). ANS: error trap 2007 Pearson Education 7

8 12. One type of illegal operation is an attempt to take the square root of a(n). ANS: negative number 13. The reciprocal of 0 is. ANS: undefined 14. The order of operations for is NOT first, then AND, then OR. ANS: logical operators 15. A dual-alternative selection structure is also known as a(n) structure. ANS: If-Then Pearson Education 8

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