C++ How to Program (10th Edition)
10th Edition
ISBN: 9780134448237
Author: Paul J. Deitel, Harvey Deitel
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Textbook Question
Chapter 21, Problem 21.19E
(Erasing Characters from a string) Write a
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
(1) Prompt the user for a string that contains two strings separated by a comma. (1 pt)
Examples of strings that can be accepted:
Jill, Allen
Jill , Allen
Jill,Allen
Ex:
Enter input string:Jill, Allen
(2) Print an error message if the input string does not contain a comma. Continue to prompt until a valid string is entered. Note: If the input contains a comma, then assume that the input also contains two strings. (2 pts)Ex:
Enter input string:Jill AllenError: No comma in string.
Enter input string:Jill, Allen
(3) Extract the two words from the input string and remove any spaces. Store the strings in two separate variables and output the strings. (2 pts)Ex:
Enter input string:Jill, AllenFirst word: JillSecond word: Allen
(4) Using a loop, extend the program to handle multiple lines of input. Continue until the user enters q to quit. (2 pts)Ex:
Enter input string: Jill, Allen First word: Jill Second word: Allen Enter input string: Golden , Monkey First word: Golden Second word:…
(Financial: credit card number validation) Credit card numbers follow certain pat-
terns. A credit card number must have between 13 and 16 digits. It must start with:
4 for Visa cards
5 for Master cards
37 for American Express cards
6 for Discover cards
In 1954, Hans Luhn of IBM proposed an algorithm for validating credit card
numbers. The algorithm is useful to determine whether a card number is entered
correctly or whether a credit card is scanned correctly by a scanner. Credit card
numbers are generated following this validity check, commonly known as the
Luhn check or the Mod 10 check, which can be described as follows (for illustra-
tion, consider the card number 4388576018402626):
1. Double every second digit from right to left. If doubling of a digit results in a
two-digit number, add up the two digits to get a single-digit number.
4388576018402626
→ 2 * 2 = 4
→ 2 * 2 = 4
→ 4 * 2 = 8
→ 1 * 2 = 2
6 * 2 = 12 (1+ 2 = 3)
→ 5 * 2 = 10 (1+ 0 = 1)
→ 8 * 2 = 16 (1 + 6 = 7)
→ 4 * 2 = 8
[SHORT ANSWER] Use Python. Using loop, if, and string methods validate the string variable password by making sure the length of the password is at least 8 characters and has at least one alphabet and one digit. Display appropriate messages as shown in the following examples (use any additional variables):
Chapter 21 Solutions
C++ How to Program (10th Edition)
Ch. 21 - Prob. 21.4ECh. 21 - Prob. 21.5ECh. 21 - (Find Code Error) Find any errors in the following...Ch. 21 - (Simple Encryption) Some information on the...Ch. 21 - Prob. 21.8ECh. 21 - Prob. 21.9ECh. 21 - (String Concatenation) Write a program that...Ch. 21 - (Hangman Game) Write a program that plays the game...Ch. 21 - (Printing a string Backward) Write a program that...Ch. 21 - (Alphabetizing Animal Names) Write a program that...
Ch. 21 - Prob. 21.14ECh. 21 - Prob. 21.15ECh. 21 - Prob. 21.16ECh. 21 - Prob. 21.17ECh. 21 - Prob. 21.18ECh. 21 - (Erasing Characters from a string) Write a program...Ch. 21 - Prob. 21.20ECh. 21 - Prob. 21.21ECh. 21 - Prob. 21.22ECh. 21 - Prob. 21.23ECh. 21 - Prob. 21.24ECh. 21 - Prob. 21.25ECh. 21 - (Cooking with Healthier Ingredients) Obesity in...Ch. 21 - Prob. 21.27MADCh. 21 - (SMS Language) Short Message Service (SMS) is a...
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
- [Using Python] Write a program to print a string with all the vowels deleted from the string "My dog has fleas". vowels = a, e, i, o, uarrow_forward(Python matplotlib or seaborn) CPU Usage We have the hourly average CPU usage for a worker's computer over the course of a week. Each row of data represents a day of the week starting with Monday. Each column of data is an hour in the day starting with 0 being midnight. Create a chart that shows the CPU usage over the week. You should be able to answer the following questions using the chart: When does the worker typically take lunch? Did the worker do work on the weekend? On which weekday did the worker start working on their computer at the latest hour? cpu_usage = [ [2, 2, 4, 2, 4, 1, 1, 4, 4, 12, 22, 23, 45, 9, 33, 56, 23, 40, 21, 6, 6, 2, 2, 3], # Monday [1, 2, 3, 2, 3, 2, 3, 2, 7, 22, 45, 44, 33, 9, 23, 19, 33, 56, 12, 2, 3, 1, 2, 2], # Tuesday [2, 3, 1, 2, 4, 4, 2, 2, 1, 2, 5, 31, 54, 7, 6, 34, 68, 34, 49, 6, 6, 2, 2, 3], # Wednesday [1, 2, 3, 2, 4, 1, 2, 4, 1, 17, 24, 18, 41, 3, 44, 42, 12, 36, 41, 2, 2, 4, 2, 4], # Thursday [4, 1, 2, 2, 3, 2, 5, 1, 2, 12, 33, 27, 43, 8,…arrow_forwardQ1: (Palindrome number) Write a program that prompts the user to enter a three-digit integer and determines whether it is a palindrome number. A number is palindrome if it reads the same from right to left and from left to right. Here is a sample run of this program: Enter a three-digit integer: 121 121 is a palindrome Enter a three-digit integer: 123 123 not a palindromearrow_forward
- Most Frequent Character: (see textbook page 436)( write psedocode too and use python) Write a program that lets the user enter a string and displays the character that appears most frequently in the string. Suggest using count, alphabet_string = 'abcd….z', upper(), find(), and len(). Attached: text.txt for testingarrow_forwardQ1/ Write a program that reads from the user the number of students in the class and their grades in one class, the program must find the largest and the lowest grades with the sequence of students and then find the average grade of the class, see the example below:arrow_forward5: CheckLetter.cpp) Write a program that adds a check letter to an eight-digit number. The check letter should be computed as follows: Break the number up into 4 two-digit numbers. Add the four numbers together. Find the remainder after division by 26. The check letter is the letter in the alphabet that corresponds to the number just computed. (A=0, B=1, C=2, etc.) Print the original number followed by the check letter. Use at least one function that returns a value when you write this program.arrow_forward
- (Phone key pads) The international standard letter/number mapping found on the telephone is shown below: 100 2 abc 3 def 4 ghi 5 ikl 6mno 7pgrs 8 tuv 9wxyz Write a program that prompts the user to enter a letter and displays its correspond- ing number.arrow_forward(DEBUG AND MAKE A FLOWCHART OF THIS PROGRAM) // This pseudocode is intended to display// employee net pay values. All employees have a standard// $45 deduction from their checks.// If an employee does not earn enough to cover the deduction,// an error message is displayed.// This example is modularized.start Declarations string name string EOFNAME = ZZZZ while name not equal to EOFNAME housekeeping() endwhile while name not equal to EOFNAME mainLoop() endwhile while name not equal to EOFNAME finish() endwhilestop housekeeping() output "Enter first name or ", EOFNAME, " to quit "return mainLoop() Declarations num hours num rate num DEDUCTION = 45 num net output "Enter hours worked for ", name input hours output "Enter hourly rate for ", name input rate gross = hours * rate net = gross - DEDUCTION if net > 0 then output "Net pay for ", name, " is ", net else output "Deductions not covered. Net is…arrow_forward(Display three patterns using loops) Use nested loops that display the following patterns in three separateprograms:arrow_forward
- ) Invoking time(0) returns the elapse time in milliseconds since midnight January 1, 1970. Write a program that displays the date and time.arrow_forward[Calculate grades’ average for a student] write a program that calculates the student grades’ average for a semester for the number of courses taken in that semester. Your program should do the following: 1.Read from user the number of courses (n) 2. Then, read the courses’ grades for n times (Hint: use a loop) 3.If a grade is grater than 100 or less than 0, ask the user to enter the grade again. 4.Calculate the average of grades using the following formula: average = (sum of grades) / n 5.Print out the average grade on the screen. Note: Always use appropriate data types.arrow_forward(Python programming) Write a program that incorporates an algorithm with a function that will check whether or not a string is in a valid password format with the following rules: A password must have at least ten characters.A password consists of only letters, digits and symbol(s).A password must contain at least two digits. A password must contain at least one uppercase letter A password must contain at least one special symbol Your program should continue to prompt until the user enters a valid password. Regular expressions (regex) are not allowed!arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill EducationStarting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSONDigital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
- C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSONDatabase Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage LearningProgrammable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
Database System Concepts
Computer Science
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:McGraw-Hill Education
Starting Out with Python (4th Edition)
Computer Science
ISBN:9780134444321
Author:Tony Gaddis
Publisher:PEARSON
Digital Fundamentals (11th Edition)
Computer Science
ISBN:9780132737968
Author:Thomas L. Floyd
Publisher:PEARSON
C How to Program (8th Edition)
Computer Science
ISBN:9780133976892
Author:Paul J. Deitel, Harvey Deitel
Publisher:PEARSON
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781337627900
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Programmable Logic Controllers
Computer Science
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education
Literals in Java Programming; Author: Sudhakar Atchala;https://www.youtube.com/watch?v=PuEU4S4B7JQ;License: Standard YouTube License, CC-BY
Type of literals in Python | Python Tutorial -6; Author: Lovejot Bhardwaj;https://www.youtube.com/watch?v=bwer3E9hj8Q;License: Standard Youtube License