Problem Solving with C++ (10th Edition)
10th Edition
ISBN: 9780134448282
Author: Walter Savitch, Kenrick Mock
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 7, Problem 19PP
Program Plan Intro
Shoulder surfing
Program Plan:
- Include required header file.
- Assign the actual pin.
- Declare array variable for random PIN numbers and user entered password.
- Declare variable for PIN number.
- Generate random digits for each password digit using “rand()” function.
- Display the sequence of “PIN” and “NUM” to screen using “for” loop.
- Read the five digits PIN number from user.
- Extract each digit into user entered password using operator “%” and “/”.
- Initializes the match status to “false”.
- Check the five digits of password.
- If the user entered password is not equal to the random PIN number of actual PIN, then assign the match status to “true”.
- If the match status is “false”, then display the message “Invalid password”.
- Otherwise, display the message “password matches correctly”.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
whats for dinner?
please
Consider the follow program that prints a page number on the left or right side of a page. Define and use a new function, isEven, that returns a Boolean to make the condition in the if statement easier to understand.
ef main() : page = int(input("Enter page number: ")) if page % 2 == 0 : print(page) else : print("%60d" % page)
main()
What is the correct python code for the function def countWords(string) that will return a count of all the words in the string string of workds that are separated by spaces.
Chapter 7 Solutions
Problem Solving with C++ (10th Edition)
Ch. 7.1 - Prob. 1STECh. 7.1 - In the array declaration double score(5); state...Ch. 7.1 - Identity any errors in the following array...Ch. 7.1 - What is the output of the following code? char...Ch. 7.1 - What is the output of the following code? double a...Ch. 7.1 - What is the output of the following code? int i,...Ch. 7.1 - Prob. 7STECh. 7.1 - Suppose we expect the elements of the array a to...Ch. 7.1 - Prob. 9STECh. 7.1 - Suppose you have the following array declaration...
Ch. 7.2 - Consider the following function definition: void...Ch. 7.2 - Prob. 12STECh. 7.2 - Write a function definition for a function called...Ch. 7.2 - Consider the following function definition: void...Ch. 7.2 - Insert const before any of the following array...Ch. 7.2 - Write a function named outOfOrder that takes as...Ch. 7.3 - Write a program that will read up to ten...Ch. 7.3 - Write a program that will read up to ten letters...Ch. 7.3 - Following is the declaration for an alternative...Ch. 7.4 - Prob. 20STECh. 7.4 - Write code that will fill the array a (declared...Ch. 7.4 - Prob. 22STECh. 7 - Write a function named firstLast2 that takes as...Ch. 7 - Write a function named countNum2s that takes as...Ch. 7 - Write a function named swapFrontBack that takes as...Ch. 7 - The following code creates a small phone book. An...Ch. 7 - There are three versions of this project. Version...Ch. 7 - Hexadecimal numerals are integers written in base...Ch. 7 - Solution to Programming Project 7.3 Write a...Ch. 7 - Prob. 4PPCh. 7 - Write a program that reads in a list of integers...Ch. 7 - Prob. 6PPCh. 7 - An array can be used to store large integers one...Ch. 7 - Write a program that will read a line of text and...Ch. 7 - Write a program to score five-card poker hands...Ch. 7 - Write a program that will allow two users to play...Ch. 7 - Write a program to assign passengers seats in an...Ch. 7 - Prob. 12PPCh. 7 - The mathematician John Horton Conway invented the...Ch. 7 - Redo (or do for the first time) Programming...Ch. 7 - Redo (or do for the first time) Programming...Ch. 7 - A common memory matching game played by young...Ch. 7 - Your swim school has two swimming instructors,...Ch. 7 - Your swim school has two swimming instructors,...Ch. 7 - Prob. 19PPCh. 7 - The Social Security Administration maintains an...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- Consider the following program that counts the number of spaces in a user-supplied string. Modify the program to define and use a function, countSpaces, instead. def main() : userInput = input("Enter a string: ") spaces = 0 for char in userInput : if char == " " : spaces = spaces + 1 print(spaces) main()arrow_forwardWhat is the python code for the function def readFloat(prompt) that displays the prompt string, followed by a space, reads a floating-point number in, and returns it. Here is a typical usage: salary = readFloat("Please enter your salary:") percentageRaise = readFloat("What percentage raise would you like?")arrow_forwardassume python does not define count method that can be applied to a string to determine the number of occurances of a character within a string. Implement the function numChars that takes a string and a character as arguments and determined and returns how many occurances of the given character occur withing the given stringarrow_forward
- Consider the ER diagram of online sales system above. Based on the diagram answer the questions below, a) Based on the ER Diagram, determine the Foreign Key in the Product Table. Just mention the name of the attribute that could be the Foreign Key. b) Mention the relationship between the Order and Customer Entities. You can use the following: 1:1, 1:M, M:1, 0:1, 1:0, M:0, 0:M c) Is there a direct relationship that exists between Store and Customer entities? Answer Yes/No? d) Which of the 4 Entities mention in the diagram can have a recursive relationship? e) If a new entity Order_Details is introduced, will it be a strong entity or weak entity? If it is a weak entity, then mention its type?arrow_forwardNo aiarrow_forwardGiven the dependency diagram of attributes {C1,C2,C3,C4,C5) in a table shown in the following figure, (the primary key attributes are underlined)arrow_forward
- What are 3 design techniques that enable data representations to be effective and engaging? What are some usability considerations when designing data representations? Provide examples or use cases from your professional experience.arrow_forward2D array, Passing Arrays to Methods, Returning an Array from a Method (Ch8) 2. Read-And-Analyze: Given the code below, answer the following questions. 2 1 import java.util.Scanner; 3 public class Array2DPractice { 4 5 6 7 8 9 10 11 12 13 14 15 16 public static void main(String args[]) { 17 } 18 // Get an array from the user int[][] m = getArray(); // Display array elements System.out.println("You provided the following array "+ java.util.Arrays.deepToString(m)); // Display array characteristics int[] r = findCharacteristics(m); System.out.println("The minimum value is: " + r[0]); System.out.println("The maximum value is: " + r[1]); System.out.println("The average is: " + r[2] * 1.0/(m.length * m[0].length)); 19 // Create an array from user input public static int[][] getArray() { 20 21 PASSTR2222322222222222 222323 F F F F 44 // Create a Scanner to read user input Scanner input = new Scanner(System.in); // Ask user to input a number, and grab that number with the Scanner…arrow_forwardGiven the dependency diagram of attributes C1,C2,C3,C4,C5 in a table shown in the following figure, the primary key attributes are underlined Make a database with multiple tables from attributes as shown above that are in 3NF, showing PK, non-key attributes, and FK for each table? Assume the tables are already in 1NF. Hint: 3 tables will result after deducing 1NF -> 2NF -> 3NFarrow_forward
- Consider the ER diagram of online sales system above. Based on the diagram answer the questions below, 1. Based on the ER Diagram, determine the Foreign Key in the Product Table. Just mention the name of the attribute that could be the Foreign Key 2. Is there a direct relationship that exists between Store and Customer entities? AnswerYes/No?arrow_forwardConsider the ER diagram of online sales system above. Based on the diagram answer thequestions below, 1. Mention the relationship between the Order and Customer Entities. You can use the following: 1:1, 1:M, M:1, 0:1, 1:0, M:0, 0:M 2. Which one of the 4 Entities mention in the diagram can have a recursive relationship? 3. If a new entity Order_Details is introduced, will it be a strong entity or weak entity? If it is a weak entity, then mention its type (ID or Non-ID, also Justify why)? NO AI use pencil and paperarrow_forwardSTEP 1: The skeleton Let's start by creating a skeleton for some of the classes you will need. • Write a class called Tile. You can think of a tile as a square on the board on which the game will be played. We will come back to this class later. For the moment you can leave it empty while you work on creating classes that represents characters in the game. • Write an abstract class Fighter which has the following private fields: - A Tile field named position, representing the fighter's position in the game. A double field named health, representing the fighter's health points (HP). An int field named weaponType, representing the type of weapon the fighter is using. This value is used to rank different weapon types: higher values indicate higher weapon ranks. -An int field named attackDamage, representing the fighter's attack power. The class must also have the following public methods: 3 A constructor that takes as input a Tile indicating the position of the fighter, a double…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
C++ for Engineers and ScientistsComputer ScienceISBN:9781133187844Author:Bronson, Gary J.Publisher:Course Technology Ptr
C++ Programming: From Problem Analysis to Program...Computer ScienceISBN:9781337102087Author:D. S. MalikPublisher:Cengage Learning
EBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENT
Operations Research : Applications and AlgorithmsComputer ScienceISBN:9780534380588Author:Wayne L. WinstonPublisher:Brooks Cole
Programming Logic & Design ComprehensiveComputer ScienceISBN:9781337669405Author:FARRELLPublisher:Cengage
C++ for Engineers and Scientists
Computer Science
ISBN:9781133187844
Author:Bronson, Gary J.
Publisher:Course Technology Ptr
C++ Programming: From Problem Analysis to Program...
Computer Science
ISBN:9781337102087
Author:D. S. Malik
Publisher:Cengage Learning
EBK JAVA PROGRAMMING
Computer Science
ISBN:9781337671385
Author:FARRELL
Publisher:CENGAGE LEARNING - CONSIGNMENT
Operations Research : Applications and Algorithms
Computer Science
ISBN:9780534380588
Author:Wayne L. Winston
Publisher:Brooks Cole
Programming Logic & Design Comprehensive
Computer Science
ISBN:9781337669405
Author:FARRELL
Publisher:Cengage