1. Chapter five selected exercises with solutions

2. Exercises 5.1

4. 1. True 2. False 3. True 4. False 5. True 6. False 7. True 8. True 9. False 10. False 11. False 12. True 13. True 14. True 15. True 16. True 17. False 18. True 19. False 20. True 21. False 22. False 23. True 24. True

5. Exercises 5.1

6. 25. Equivalent 26. Not Equivalent 27. Not Equivalent 28. Equivalent 29. Equivalent 30. Not Equivalent 31. Not Equivalent 32. Not equivalent 33. Equivalent 34. Not Equivalent

7. Exercises 5.1 35. a <= b 36. (a <> b) And (a <> d) 37. (a >= b) Or (c = d) 38. (a = b) Or (a > b) 39. (a = "") Or (a >= b) Or (Len(a) >= 5)

8. Exercises 5.2

13. 1. Less than ten 2. Student 3. tomorrow is another day. 4. Your change contains 3 dollars. 5. 10 6. 7 12 7. Cost of call: $11.26 8. To be or not to be. 9. The number of vowels is 2 10. Hi

14. Exercises 5.2 11. positive 12. You are eligible to vote in 2 years 13. Incorrect condition. Should be If (1 < num) And (num < 3) Then 14. The variable num is missing from the second part of the condition.. Should be If (num > 5) And (num < 9) Then 15. no Then in second line 16. Incorrect condition. Should be If (major = "Business") Or (major = "Computer Science") Then Also, the variable major was never assigned a value. 17. Comparing numeric and string data 18. Faulty logic. If the user enters "off", the switch changes to "on" and then back to "off". 19. Incorrect condition. Should be If (j = 4) Or (k = 4) Then 20. Missing End If for outermost If block

15. Exercises 5.2 21. a = 5 22. If (answer = "y") Or (answer = "Y") Then picOutput.Print "YES" End If 'or If UCase(answer) = "Y" Then picOutput.Print "YES" End If 23. If j = 7 Then b = 1 Else b = 2 End If 24. If (a < b) And (b < c) Then picOutput.Print b; "is between"; a; "and"; c End If

16. Exercises 5.2 25. message = "Is Alaska bigger than Texas and California combined?" answer = InputBox(message) If UCase(Left(answer, 1)) = "Y" Then picOutput.Print "Correct" Else picOutput.Print "Wrong" End If 26. message = "How tall (in feet) is the Statue of Liberty?" feet = Val(InputBox(message)) If (feet > 141) And (feet < 161) Then picOutput.Print "Close" Else picOutput.Print "Nope" End If picOutput.Print "The Statue of Liberty is 151.08 feet" picOutput.Print "from base to torch."

17. Exercises 5.3

19. 1. The price is $3.75 The price is $3.75 2. case 2 case 1 case 3 3. Mesozoic Era Paleozoic Era ? 4. Sorry, 1945. Work on the ENIAC began in June 1943. Correct No, 1945. By then IBM had built a stored-program computer. 5. Nope. He worked with the developer, von Neumann, on the ENIAC. Correct.

20. Exercises 5.3

24. 6. The equation has no real solutions. The equation has two real solutions. The equation has exactly one solution. 7. The less things change, the more they remain the same. Less is more. Time keeps everything from happening at once. 8. Hi Hi 9.Should have a Case clause. 10. Both Case statements are invalid. The first one should be 3 To 10. The second one should have a comma instead of a semicolon. 11. Case a = "Bob" should be Case "Bob"

25. Exercises 5.3

27. 12. In Case clause, h should be "h" 13. Error in second Case clause. 14. First Case is executed every time, no matter what the value of num is. 15. Logical error: >= "Peach" should be >= "PEACH" Syntax error: "ORANGE TO PEACH" should be "ORANGE" To "PEACH" 16. Invalid second Case. Should be Case 10000 To 30000 17. Valid 18. Valid 19. Invalid 20. Invalid 21. Valid 22. Invalid

28. Exercises 5.3

31. 23. Select Case a Case 1 picOutput.Print "one" Case Is > 5 picOutput.Print "two" End Select 24. Select Case a Case 1 picOutput.Print "lambs" picOutput.Print "eat“ Case Is <=3 picOutput.Print "eat" Case 5, Is > 7 picOutput.Print "ivy" End Select

32. Exercises 5.3 25. Select Case a Case 2 picOutput.Print "yes" Case Is < 5 picOutput.Print "no" End Select 26. Select Case a Case 1, 3 a = 2 Case 2 a = 3 End Select