Starting Out with Programming Logic and Design (4th Edition)
4th Edition
ISBN: 9780133985078
Author: Tony Gaddis
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 12, Problem 10PE
File Encryption
File encryption is the science of writing the contents of a file in a secret code. For this assignment you will design a
The program should open the file and read its contents, one string at a time. As the program reads a string from the file, it substitutes each character of the string for an alternate character. It then writes the encoded string out to a second file. When the program is finished, the second file will be a version of the first file, but written in a secret code.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Password modifier
This program is: python
Many user-created passwords are simple and easy to guess. Write a program that takes a simple password and makes it stronger by replacing characters using the key below, and by appending "q*s" to the end of the input string.
i becomes !
a becomes @
m becomes M
B becomes 8
o becomes .
Ex: If the input is:
mypassword
the output is:
Myp@ssw.rdq*s
Hint: Python strings are immutable, but support string concatenation. Store and build the stronger password in the given password variable.
Password modifier
Many user-created passwords are simple and easy to guess. Write a program that takes a simple password and makes it stronger by replacing characters using the key below, and by appending "q*s" to the end of the input string. You may assume that the string does not contain spaces and will always contain less than 50 characters.
i becomes !
a becomes @
m becomes M
B becomes 8
o becomes .
Ex: If the input is:
mypassword
the output is:
Myp@ssw.rdq*s
LAB
ACTIVITY
4.20.1: LAB: Password modifier
0 / 10
please you c programming
Strings and string manipulation
Part A: Building upon an Existing Solution
Redesign the solution in the following manner.
Ask the user for their name and their email addresses before you display the results of the conversions.
When the user enters their email address search the string for the @ symbol. If the symbol is not found, ask the user to re-enter their email address till they get it right.
When you display the conversion output to the user, you must include the user’s name in the output.
Part B: Write Something New!
Write a complete and syntactically correct Python program to solve the following problem:
Input a date in numeric format from the user e.g. mm/dd/yy.
Examine the month entered by the user, if it is larger than 12 or smaller than 1, issue an error message and ask for input again.
Perform similar validation tests for the date and year. Year must be 2015. (Any other year is invalid). In addition, the year must only be two digits long..
Once all input has been…
Chapter 12 Solutions
Starting Out with Programming Logic and Design (4th Edition)
Ch. 12.2 - Prob. 12.1CPCh. 12.2 - Prob. 12.2CPCh. 12.2 - Design an algorithm that determines whether the...Ch. 12.2 - Design an algorithm that determines whether the...Ch. 12.2 - Prob. 12.5CPCh. 12.2 - Prob. 12.6CPCh. 12 - Prob. 1MCCh. 12 - Prob. 2MCCh. 12 - If the str variable contains the string "berry",...Ch. 12 - If the str variable contains the string "Redmond",...
Ch. 12 - Prob. 5MCCh. 12 - Prob. 1TFCh. 12 - Prob. 2TFCh. 12 - If the String variable str contains the string...Ch. 12 - The insert library module automatically expands...Ch. 12 - Prob. 5TFCh. 12 - Prob. 6TFCh. 12 - Prob. 7TFCh. 12 - Prob. 1SACh. 12 - If the following pseudocode were an actual...Ch. 12 - Prob. 3SACh. 12 - Prob. 4SACh. 12 - Prob. 5SACh. 12 - Design an algorithm that counts the number of...Ch. 12 - Prob. 2AWCh. 12 - Design an algorithm that counts the number of...Ch. 12 - Design an algorithm that deletes the first and...Ch. 12 - Design an algorithm that converts each occurrence...Ch. 12 - Design an algorithm that replaces each occurrence...Ch. 12 - Assume the following declaration exists in a...Ch. 12 - Prob. 1DECh. 12 - Prob. 2DECh. 12 - Prob. 3DECh. 12 - Prob. 1PECh. 12 - Sentence Capitalizer Design a program that prompts...Ch. 12 - Prob. 3PECh. 12 - Sum of Digits in a String Design a program that...Ch. 12 - Prob. 5PECh. 12 - Alphabetic Telephone Number Translator Many...Ch. 12 - Word Separator Design a program that accepts as...Ch. 12 - Pig Latin Design a program that reads a sentence...Ch. 12 - Prob. 9PECh. 12 - File Encryption File encryption is the science of...Ch. 12 - File Decryption Filter Design a program that...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
A criticism of the break statement and the continue statement is that each is unstructured. Actually, break sta...
C How to Program (8th Edition)
Suppose you need to write a program that stores nonduplicate elements in the order of insertion, what data stru...
Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
Give an example of a data constraint.
Database Concepts (8th Edition)
Explain the different aspects of the cost of a programming language.
Concepts of Programming Languages (11th Edition)
A program contains the following method definition: public static int cube(int num) { return num num num; } W...
Starting Out with Java: From Control Structures through Data Structures (3rd Edition)
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
- assembly language ctt, visual studio Write an assembly language program to input a string from the user. Your program should do these two things: 1. count and display the number of words in the user input string. 2. Flip the case of each character from upper to lower or lower to upper. For example if the user types in: "Hello thEre. How aRe yOu?" Your output should be: The number of words in the input string is: 5 The output string is : hELLO THeRE. hOW ArE YoU?arrow_forwardsubject: microprocesor and assembly language Write a program that displays a string in all possible combinations of foreground and background colors (16 x 16 =256). The colors are numbered from 0 to 15, so you can use a nested loop to generate all possiblecombinations.arrow_forward1. This program reads one number, as a string, and assign it to String getData Increment and display getData as integer and double Only strings are to be read 2. This program reads strings only Read ten digits, such as 2345678923 store them in getData, which is a string Display each value and it position in the stringarrow_forward
- Python problem To decipher a code we must make a program that performs certain operations on the input string. -If they find 3 equal letters in a row, you must replace them with the next letter in the alphabet.-If you only find 2 equal letters in a row, you must replace them with the previous letter in the alphabet.-The comma must be removed-The period should be left and a space added after it.-All other characters should be left as isNote that in this case after the "Z" is the "A", and therefore before the "A" is the "Z". Given a string S, execute the operations described above, until no more can be executed. For example: GHHGP, OOOMMZAAZ => GGGPPLZZZ => HELLO EntryThe input will be a single line containing the string S. The string only includes uppercase letters of the English alphabet and special characters. DepartureYou must print the resulting string in double quotes ". Examples Input Example 1 LLLENTTA, JDDD OBCCBUMMTO!Output Example 1 "HIDDEN MESSAGE!" Input Example 2…arrow_forwardPython problem To decipher a code we must make a program that performs certain operations on the input string. -If they find 3 equal letters in a row, you must replace them with the next letter in the alphabet.-If you only find 2 equal letters in a row, you must replace them with the previous letter in the alphabet.-The comma must be removed-The period should be left and a space added after it.-All other characters should be left as isNote that in this case after the "Z" is the "A", and therefore before the "A" is the "Z". Given a string S, execute the operations described above, until no more can be executed. For example: GHHGP, OOOMMZAAZ => GGGPPLZZZ => HELLO EntryThe input will be a single line containing the string S. The string only includes uppercase letters of the English alphabet (Does not include Ñ) and special characters. DepartureYou must print the resulting string in double quotes ". Examples Input Example 1 LLLENTTA, JDDD OBCCBUMMTO!Output Example 1 "HIDDEN…arrow_forwardThis application accepts an arbitrary number of user inputs. Every time this application receives a string, it should add the string to a growing string.Newly added strings should be added to the growing string at the index equal to the newly added string's length.arrow_forward
- JAVA CODE PLEASE FINAL EXAM Part 3 Instructions: Create a java program that asks & accepts input from the user (must be int value). Then depending on the number of inputs, the program will ask the user to enter string value/s. After, the program will print the strings entered by the user line-by-line. Constraints: Create a function and call it in the main function. Use Functions With No Parameters and Return Values Use for Loop Use String Array Use Scanner Input 1. One line containing an integer Sample 2 2. One line containing string Sample Funny 3. One line containing string Sample Sadly Output Enter·the·number·of·string·array:·2 Enter·string·#1:·Funny Enter·string·#2:·Sadly You've·entered: Funny Sadlyarrow_forwardLap Timer Tool Write a program ON PYTHON that asks the user to enter the number of times that they have run around a racetrack, and then uses a loop to prompt them to enter the lap time for each of their laps. When the loop finishes, the program should display the time of their fastest lap, the time of their slowest lap, and their average lap time.arrow_forwardThe midfix of 5 is the middle five characters of a string. Given a string input, output the middle five characters of that string with a new line at the end. Assume the string length is always odd and at least five characters. Hint: Use a loop to traverse the string. Ex: If the input is: xxxplanexxx the output is: Midfix: plane 1 #include 2 #include 3 4 int main(void) { 456 char s[100]; 7 char result[6]; SENES000 10 11 12 13 } 14 // buffer for string input // buffer for string output /* Type your code here. */ return 0;arrow_forward
- PYTHON PROGRAMMING ASSIGNMENT PYTHON PROGRAMMING LANGUAGE ASSIGNMENT Create a new text document called names.txt (this is done by hand - not using programming) with the following names: Adam, Bryan, Charlie. Each name should be followed by a hard return (do not store them in a list). Main Function. Write a program where the user enters a name. Using the read function, check to see if the name is in the text document. If it is, respond back to the user the name is found within the list. Read Function. The read function should return the contents of the text document as a list. Write Function. The write function should take the list and override the file with the new names list in reverse alphabetical order with a hard return after each name.arrow_forwardOption #1: String Values in Reverse Order Assignment Instructions Write a Python function that will accept as input three string values from a user. The method will return to the user a concatenation of the string values in reverse order. The function is to be called from the main method. In the main method, prompt the user for the three strings.arrow_forwardWrite code to removes a name from a string after the name has been inserted. use c# lang.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
EBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENT
Microsoft Visual C#Computer ScienceISBN:9781337102100Author:Joyce, Farrell.Publisher:Cengage Learning,
EBK JAVA PROGRAMMING
Computer Science
ISBN:9781337671385
Author:FARRELL
Publisher:CENGAGE LEARNING - CONSIGNMENT
Microsoft Visual C#
Computer Science
ISBN:9781337102100
Author:Joyce, Farrell.
Publisher:Cengage Learning,
C - File I/O; Author: Tutorials Point (India) Ltd.;https://www.youtube.com/watch?v=cEfuwpbGi1k;License: Standard YouTube License, CC-BY
file handling functions in c | fprintf, fscanf, fread, fwrite |; Author: Education 4u;https://www.youtube.com/watch?v=aqeXS1bJihA;License: Standard Youtube License