STARTING OUT WITH C++ MPL
9th Edition
ISBN: 9780136673989
Author: GADDIS
Publisher: PEARSON
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Chapter 8, Problem 15PC
Driver’s License Exam
The State Department of Motor Vehicles (DMV) has asked you to write a
| 1. B | 5. C | 9. C | 13. D | 17. C |
| 2. D | 6. A | 10. D | 14. A | 18. B |
| 3. A | 7. B | 11. B | 15. D | 19. D |
| 4. A | 8. A | 12. C | 16. C | 20. A |
To do this, you should create a TestGrader class. The class will have an answers array of 20 characters, which holds the correct test answers. It will have two public member functions that enable user programs to interact with the class: setKey and grade. The setKey function receives a 20-character string holding the correct answers and copies this information into its answers array. The grade function receives a 20-characte r array holding the test taker’s answers and compares each of their answers to the correct one. An applicant must correctly answer 15 or more of the 20 questions to pass the exam. After “grading” the exam, the grade function should create and return to the user a string that includes the following information:
• A message indicating whether the applicant passed or failed the exam
• The number of right answers and the number of wrong answers
• A list of the question numbers for all incorrectly answered questions
The client program that creates and uses a TestGrader object should first make a single call to setKey, passing it a string containing the 20 correct answers. Once this is done, it should allow a test taker's 20 answers to be entered, making sure only answers of A-D are accepted, and store them in a 20-character array. Then it should call the grade function to grade the exam and should display the string the function returns. The program should loop to allow additional tests to be entered and graded until the user indicates a desire to quit.
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Chapter 8 Solutions
STARTING OUT WITH C++ MPL
Ch. 8.3 - Define the following arrays: A) empNum, a 100...Ch. 8.3 - Prob. 8.2CPCh. 8.3 - Prob. 8.3CPCh. 8.3 - Assume a program includes the following two...Ch. 8.3 - What is array bounds checking? Does C++ perform...Ch. 8.3 - What is the output of the following code? int...Ch. 8.3 - Complete the following program skeleton so it will...Ch. 8.7 - Define the following arrays: A) ages, a 10-element...Ch. 8.7 - Indicate if each of the following array...Ch. 8.7 - Prob. 8.10CP
Ch. 8.7 - Given the following array definition: int values...Ch. 8.7 - Prob. 8.12CPCh. 8.7 - Prob. 8.13CPCh. 8.7 - What is the output of the following code? const...Ch. 8.9 - Write a typedef statement that makes the name...Ch. 8.9 - Prob. 8.16CPCh. 8.9 - What is the output of the following program...Ch. 8.9 - The following program segments, when completed,...Ch. 8.11 - Prob. 8.19CPCh. 8.11 - Prob. 8.20CPCh. 8.11 - Prob. 8.21CPCh. 8.11 - Prob. 8.22CPCh. 8.11 - Prob. 8.23CPCh. 8.11 - Fill in the empty table below so it shows the...Ch. 8.11 - Write a function called displayArray7. The...Ch. 8.11 - Prob. 8.26CPCh. 8.12 - Prob. 8.27CPCh. 8.12 - Write definition statements for the following...Ch. 8.12 - Define gators to be an empty vector of ints and...Ch. 8.13 - True or false: The default constructor is the only...Ch. 8.13 - True or false: All elements in an array of objects...Ch. 8.13 - What will the following program display on the...Ch. 8.13 - Complete the following program so that it defines...Ch. 8.13 - Add two constructors to the Product structure...Ch. 8.13 - Prob. 8.35CPCh. 8.13 - Prob. 8.36CPCh. 8.13 - Prob. 8.37CPCh. 8.13 - Write the definition for an array of five Product...Ch. 8.13 - Write a structure declaration called Measurement...Ch. 8.13 - Write a structure declaration called Destination ,...Ch. 8.13 - Define an array of 20 Destination structures (see...Ch. 8 - The ________ indicates the number of elements, or...Ch. 8 - The size declarator must be a(n) _______ with a...Ch. 8 - Prob. 3RQECh. 8 - Prob. 4RQECh. 8 - The number inside the brackets of an array...Ch. 8 - C++ has no array ________ checking, which means...Ch. 8 - Prob. 7RQECh. 8 - If a numeric array is partially initialized, the...Ch. 8 - If the size declarator of an array definition is...Ch. 8 - Prob. 10RQECh. 8 - Prob. 11RQECh. 8 - Prob. 12RQECh. 8 - Arrays are never passed to functions by _______...Ch. 8 - To pass an array to a function, pass the ________...Ch. 8 - A(n) ________ array is like several arrays of the...Ch. 8 - Its best to think of a two -dimensional array as...Ch. 8 - Prob. 17RQECh. 8 - Prob. 18RQECh. 8 - When a two -dimensional array is passed to a...Ch. 8 - When you pass the name of an array as an argument...Ch. 8 - Look at the following array definition. int values...Ch. 8 - Given the following array definition: int values...Ch. 8 - Prob. 23RQECh. 8 - Assume that array1 and array2 are both 25-element...Ch. 8 - Prob. 25RQECh. 8 - How do you establish a parallel relationship...Ch. 8 - Look at the following array definition. double...Ch. 8 - Prob. 28RQECh. 8 - Prob. 29RQECh. 8 - Prob. 30RQECh. 8 - Prob. 31RQECh. 8 - The following code totals the values in each of...Ch. 8 - Prob. 33RQECh. 8 - Prob. 34RQECh. 8 - In a program you need to store the identification...Ch. 8 - Prob. 36RQECh. 8 - Prob. 37RQECh. 8 - Prob. 38RQECh. 8 - Each of the following functions contains errors....Ch. 8 - Soft Skills Diagrams are an important means of...Ch. 8 - Perfect Scores 1. Write a modular program that...Ch. 8 - Larger Than n Create a program with a function...Ch. 8 - Roman Numeral Converter Write a program that...Ch. 8 - Chips and Salsa Write a program that lets a maker...Ch. 8 - Monkey Business A local zoo wants to keep track of...Ch. 8 - Rain or Shine An amateur meteorologist wants to...Ch. 8 - Lottery Write a program that simulates a lottery....Ch. 8 - Rainfall Statistics Write a modular program that...Ch. 8 - Lo Shu Magic Square The Lo Shu Magic Square is a...Ch. 8 - Baseball Champions This challenge uses two files...Ch. 8 - Chips and Salsa Version 2 Revise Programming...Ch. 8 - Stats Class and Rainfall Statistics Create a Stats...Ch. 8 - Stats Class and Track Statistics Write a client...Ch. 8 - Prob. 14PCCh. 8 - Drivers License Exam The State Department of Motor...Ch. 8 - Array of Payro11 Objects Design a PayRoll class...Ch. 8 - Drink Machine Simulator Create a class that...Ch. 8 - Bin Manager Class Design and write an object...Ch. 8 - Tic-Tac-Toe Game Write a modular program that...Ch. 8 - Theater Ticket Sales Create a TicketManager class...
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