STARTING OUT WITH C++ MPL
9th Edition
ISBN: 9780136673989
Author: GADDIS
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 5, Problem 28PC
Using Files—Student Line Up
Modify the Student Line-Up program described in
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
C++HurdleWords The HurdleWords class is mostly provided to you. HurdleWords is constructed from two files in the data/ folder: ● valid_guesses.txt (all 5 letter guesses considered to be valid words to guess), and ● valid_hurdles.txt (all words that may be selected to be the secret Hurdle.) ● Note: you may edit both text files if you’d like to add custom words to your game. HurdleWords stores all potential valid Hurdles from valid_hurdles.txt into a vector of strings (valid_hurdles_), and all valid guesses from valid_guesses.txt into an unordered set of strings (valid_guesses_). A set is simply a data structure that contains no duplicates and allows for a speedy lookup to check if a given element exists within the set. Because there are over 10,000 valid guesses, we store them in an unordered set to leverage their speediness, as you will need to check if a user-submitted guess is considered valid (i.e. their guess is considered a valid guess in the dictionary). You are responsible for…
Finish this program from the code posted below! Note: There should be two files Main.py and Contact.py
You will implement the edit_contact function. In the function, do the following:
Ask the user to enter the name of the contact they want to edit.
If the contact exists, in a loop, give them the following choices
Remove one of the phone numbers from that Contact.
Add a phone number to that Contact.
Change that Contact's email address.
Change that Contact's name (if they do this, you will have to remove the key/value pair from the dictionary and re-add it, since the key is the contact’s name. Use the dictionary's pop method for this!)
Stop editing the Contact
Once the user is finished making changes to the Contact, the function should return.
Code:from Contact import Contactimport pickledef load_contacts():""" Unpickle the data on mydata.dat and save it to a dictionaryReturn an empty dictionary if the file doesn't exist """try:with open("mydata.dat", 'rb') as file:return…
1994 Weekly Gas GraphIn the student sample programs for this book, you will find a text file named 1994_Weekly_Gas_Averages.txt. The file contains the average gas price for each week in the year 1994.(There are 52 lines in the file.) Using matplotlib, write a Python program that reads thecontents of the file then plots the data as either a line graph or a bar chart. Be sure to displaymeaningful labels along the X and Y axes, as well as the tick marks.
(in python)
Chapter 5 Solutions
STARTING OUT WITH C++ MPL
Ch. 5.1 - How many lines will each of the following while...Ch. 5.1 - Prob. 5.2CPCh. 5.3 - What will each of the following program segments...Ch. 5.6 - In the following program segment, which variable...Ch. 5.6 - Find four errors in the following code that is...Ch. 5.6 - Write a sentinel-controlled while loop that...Ch. 5.7 - Prob. 5.7CPCh. 5.7 - Write a program segment with a do-while loop that...Ch. 5.7 - Revise your answer to Question 5.8 to use the...Ch. 5.8 - What three expressions appear inside the...
Ch. 5.8 - You want to write a for loop that displays I love...Ch. 5.8 - Prob. 5.12CPCh. 5.8 - Write a for loop that displays your name 10 times.Ch. 5.8 - Write a for loop that displays all of the odd...Ch. 5.8 - Write a for loop that displays every fifth number,...Ch. 5.8 - Write a for loop that sums up the squares of the...Ch. 5.8 - Write a for loop that sums up the squares of the...Ch. 5.8 - Write a for loop that repeats seven times, asking...Ch. 5.8 - Write a for loop that calculates the total of the...Ch. 5.11 - Which loop (while, do-while, or for) is best to...Ch. 5.11 - How many total stars will be displayed by each of...Ch. 5.11 - What will the following program segment display?...Ch. 5.12 - Prob. 5.24CPCh. 5.12 - What header file must be included in a program to...Ch. 5.12 - What five steps must be taken when a file is used...Ch. 5.12 - What is the difference between a text file and a...Ch. 5.12 - Prob. 5.28CPCh. 5.12 - What type of file stream object do you create if...Ch. 5.12 - What type of file stream object do you create if...Ch. 5.12 - If dataFi1e is an of stream object associated with...Ch. 5.12 - If dataFile is an ifstream object associated with...Ch. 5.12 - Assume you have an output file named numbers.txt...Ch. 5 - To _______ a value means to increase it by one.Ch. 5 - To _______ a value means to decrease it by one.Ch. 5 - Prob. 3RQECh. 5 - Prob. 4RQECh. 5 - The statement or block that is repeated is known...Ch. 5 - Each repetition of a loop is known as a(n)...Ch. 5 - A loop that evaluates its test expression before...Ch. 5 - A loop that evaluates its test expression after...Ch. 5 - A loop that does not have a way of stopping is...Ch. 5 - A(n) ______ is a variable that counts the number...Ch. 5 - Prob. 11RQECh. 5 - A(n) ________ is a variable that is initialized to...Ch. 5 - A(n) ______ is a special value that marks the end...Ch. 5 - The ________ loop is ideal for situations that...Ch. 5 - The _____ loop always iterates at least once.Ch. 5 - The _______and ______ loops will not iterate at...Ch. 5 - Inside the for loops parentheses, the first...Ch. 5 - A loop that is inside another is called a(n)...Ch. 5 - The _________ statement causes a loop to terminate...Ch. 5 - The _____ statement causes a loop to skip the...Ch. 5 - What header file do you need to include in a...Ch. 5 - What data type do you use when you want to create...Ch. 5 - What happens if you open an output file and the...Ch. 5 - What data type do you use when you want to create...Ch. 5 - What is a files read position? Where is the read...Ch. 5 - What should a program do when it is finished using...Ch. 5 - Write code that lets the user enter a number. The...Ch. 5 - Write a do-while loop that asks the user to enter...Ch. 5 - Write a for loop that displays the following set...Ch. 5 - Write a loop that asks the user to enter a number....Ch. 5 - Write a nested loop that displays the following...Ch. 5 - Write a nested loop that displays 10 rows of #...Ch. 5 - Rewrite the following code, converting the while...Ch. 5 - Rewrite the following code, replacing the do-while...Ch. 5 - Convert the following whi1e loop to a for loop:...Ch. 5 - Convert the following for loop to a while loop:...Ch. 5 - Complete the program segment below to write the...Ch. 5 - Complete the following program segment that reads...Ch. 5 - What will each of the following program segments...Ch. 5 - int x = 1 ; while (x 10) x++; cout x;Ch. 5 - Prob. 41RQECh. 5 - Prob. 42RQECh. 5 - Each of the program segments in this section has...Ch. 5 - A) // This code should use a loop to raise a...Ch. 5 - A) // This code should display the sum of two...Ch. 5 - Prob. 46RQECh. 5 - Characters for the ASCII Codes Write a program...Ch. 5 - Sum of Numbers Write a program that asks the user...Ch. 5 - Distance Traveled The distance a vehicle travels...Ch. 5 - Celsius to Fahrenheit Table In one of the Chapter...Ch. 5 - Speed Conversion Chart Write a program that...Ch. 5 - Ocean Levels Assuming the level of the Earths...Ch. 5 - Circle Areas The formula to compute the area of a...Ch. 5 - Pennies for Pay Write a program that calculates...Ch. 5 - Weight Loss If moderately active persons cut their...Ch. 5 - Calories Burned Running on a particular treadmill,...Ch. 5 - Membership Fees Increase A country club, which...Ch. 5 - Random Number Guessing Game Write a program that...Ch. 5 - Random Number Guessing Game Enhancement Enhance...Ch. 5 - The Greatest and Least of These Write a program...Ch. 5 - Student Line-Up A teacher has asked all her...Ch. 5 - Rate of Inflation The annual rate of inflation is...Ch. 5 - Population Write a program that will predict the...Ch. 5 - Math Tutor Version 3 This program started in...Ch. 5 - Hotel Suites Occupancy Write a program that...Ch. 5 - Rectangle Display Write a program that asks the...Ch. 5 - Diamond Display Write a program that uses nested...Ch. 5 - Triangle Display Write a program that uses nested...Ch. 5 - Arrowhead Display Write a program that uses nested...Ch. 5 - Sales Bar Chart Write a program that asks the user...Ch. 5 - Savings Account Balance Write a program that...Ch. 5 - Using FilesTotal and Average Rainfall Write a...Ch. 5 - Using FilesPopulation Bar Chart Write a program...Ch. 5 - Using FilesStudent Line Up Modify the Student...Ch. 5 - Using FilesSavings Account Balance Modification...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
A(n) __________ is a property that appears in a base class but expects to be overridden in a derived class. a. ...
Starting out with Visual C# (4th Edition)
Suppose your job is to supervise the loading of two trucks, each of which can carry, at most, fourteen tons. Th...
Computer Science: An Overview (12th Edition)
Consider the following two relations for Millennium College: STUDENT(StudentID, StudentName, CampusAddress, GPA...
Modern Database Management (12th Edition)
What is the highest decimal number that can be represented by each of the following numbers of binary digits (b...
Digital Fundamentals (11th Edition)
Write a while loop to add up the values 1 to 10 and print the sum once the loop has finished.
Objects First with Java: A Practical Introduction Using BlueJ (6th 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
- Task: Loading data from files This exercise will require you to load some information from files and use it in your program. scene.txt contains a description of a series of shapes and colours to draw. You need to write code to read in the file data and draw the requested shapes in the correct colour. Each line in scene.txt will contain one of the following starting keywords followed by some data: COLOUR followed by 3 values: R, G, B CIRCLE followed by 3 values: X, Y, RADIUS RECT Followed by 4 values: X, Y, W, H LINE Followed by 4 values: X1, Y1, X2, Y2 CIRCLES are defined from the center. RECT's are defined from the top left. All values are space separated, and you can assume all input is correct (no errors). Please solve this program to draw the scene. I can't upload the file scene.txt, so I decide to screenshot a file for you. Subject: Java Programmingarrow_forwardAssignment Submission Instructions:This is an individual assignment – no group submissions are allowed. Submit a script file that contains the SELECT statements by assigned date. The outline of the script file lists as follows:/* ******************************************************************************** * Name: YourNameGoesHere * * Class: CST 235 * * Section: * * Date: * * I have not received or given help on this assignment: YourName * ***********************************************************************************/USE RetailDB;####### Tasks: Write SQL Queries ######### -- Task 1 (Customer Information):-- List your SELECT statement below. Make sure the SQL script file can be run successfully in MySQL and show the outcome of the code on MySQLarrow_forwardOverview: Create a coin flip game that allows the user to guess whether the coin will be heads or tails. Save the data associated with the flip. Repeat for a total of 10 guesses/flips. Display result summary and details at end. Technical Requirements: Participant will guess whether a coin flip will result in Heads or Tails Computer will "flip" a coin to determine the side it lands using random generator import random at top of program result = random.randint(x,x) The program will display the results: Guess, Flip, Outcome (Match or No Match) The program will track the results and, when the game is over, display: Summary Detailed result of each turn Use parallel arrays to collect details from each turn that can be displayed as a table when the game is over Use running totals of each result detail to display at endarrow_forward
- 1. Random numbers File: random_numbers.py (Quick note: NEVER name your files the same as a Python module. If you call this file random.py it won't let you import the real random.) (Another quick note: Don't let yourself get stuck on something for too long. If one part of one question starts taking you too long, just leave it, move on and come back to it later.) Write a complete Python program that ask the user for quantity of random numbers and a maximum, then generates and store that many numbers between 0 and the maximum. When you've got this part working, add the following interesting additions: minimum maximum random choice from existing list (Hint: if there are 7 numbers it will be a number at a random index 0-6) the list reversed* the list sorted* Note*: Python's .reverse() and .sort() list methods do NOT return the reversed or sorted list... they modify the list in place.So, if you write something like: print(numbers.sort()) You will not get what you expect. You'll sort the…arrow_forwardName SearchIn the Chap07 folder of the Student Sample Programs, you will find the followingfiles:• GirlNames.txt—This file contains a list of the 200 most popular names given to girls born in the United States from 2000 through 2009.• BoyNames.txt—This file contains a list of the 200 most popular names given to boys born in the United States from 2000 through 2009.Create an application that reads the contents of the two files into two separatearrays or Lists. The user should be able to enter a boy’s name, a girl’s name, orboth, and the application should display messages indicating whether the nameswere among the most populararrow_forwardJAVA PPROGRAM ASAP Please Modify this program ASAP BECAUSE IT IS HOMEWORK ASSIGNMENT so it passes all the test cases. The program must pass the test case when uploaded to Hypergrade. Also, for test cases 1-4 it wants only to input Please enter the file name or type QUIT to exit: then input the file and display the Total number of words. For test cases 5 and 7 it wants to only to input Please enter the file name or type QUIT to exit then input input5.txt and then display File: input5.txt does not exist.\n then display Please enter the file name again or type QUIT to exit:\n then type input1.txt to display the total number of words or type quit to exit the program. For test case 6 it wants only to Please enter the file name again or type QUIT to exit:\n then type quit to exit the porgram. Chapter 9. PC #10. Word Counter (page 610) Write a program that asks the user for the name of a file. The program should display the number of words that the file contains. Input…arrow_forward
- Computer Science C# Programming Object Orientation Please use Arrays or ArrayLists where appropriate Implement a menu driven program that has some operations for a food truck. A food truck has multiple food items as well as a menu which contains a selection of the food items which will be sold for that day. A maximum of 10 food items can appear on the menu for any day. For each food item keep a code, description, category, price and quantity in stock (code, description and category are not usually changed). Create a comma delimited text file called "items.txt" for 15 or more food items, indicating the item's description, category, price and quantity in stock. Read all the food items from the text file “Items.txt” Display all the food items available for this food truck. Continuously prompt the user for a food item’s code to be placed on the menu until the menu is full or the user enters -1. Note that only food items which have a positive quantity in stock may be added to…arrow_forwardTranscribed Image Text Create a program that allows the user to do some basic functions. First, ask the user if they would like to find out sqrt, log or factorial of a number, then return the results. Here is the sample output: Welcome to the simple math helper. What would you like to calculate? 1. Sqrt 2. Log 3. Factorial > 1 Enter the number to sqrt: >9arrow_forwardFor each of the following exercises, you may choose to write a console-based or GUI application, or both. Write a program named TestScoreList that accepts eight int values representing student test scores. Display each of the values along with a message that indicates how far it is from the average.arrow_forward
- Open the Calories Solution.sln file contained in the VB2017\Chap08\Calories Solution folder. Open the Code Editor window and locate the btnDisplay_Click procedure. The procedure declares and initializes a one-dimensional array named intCalories. The array stores the numbers of daily calories consumed. The procedure should calculate and display the average number of calories consumed; use the Math.Round method to round the average to an integer. (You learned about the Math.Round method in Chapter 6.) The procedure should also display the number of days in which the daily calories were greater than the average, the number of days in which the daily calories were the same as the average, and the number of days in which the daily calories were less than the average. Code the procedure. Save the solution and then start and test the application.arrow_forwardGroup 2/12 Problem – Population Create an application that predicts the approximate size of a population of organisms. The application should use textboxes to allow the user to enter the starting number of organisms, the average daily population increase (as a percentage), and the number of days the organisms will be left to multiply. Use a ListBox to display the population size for each day of the simulation. If the user clicks the Save button, save the current prediction to a file. Group 3/7 Problem – Dice Simulatorarrow_forward# Method: Load levelsList using the data in levelsFile def readLevelsFromFile(self): try: # Set levelsList to an empty list pass # Open the file pass # Use a loop to read through the file line by line pass # This code is inside the loop: # Convert the line to a float and then append it to levelsList pass # Close the file pass except: returnarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- EBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENTProgramming with Microsoft Visual Basic 2017Computer ScienceISBN:9781337102124Author:Diane ZakPublisher:Cengage LearningC++ for Engineers and ScientistsComputer ScienceISBN:9781133187844Author:Bronson, Gary J.Publisher:Course Technology Ptr
- Microsoft Visual C#Computer ScienceISBN:9781337102100Author:Joyce, Farrell.Publisher:Cengage Learning,EBK JAVA PROGRAMMINGComputer ScienceISBN:9781305480537Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENT
EBK JAVA PROGRAMMING
Computer Science
ISBN:9781337671385
Author:FARRELL
Publisher:CENGAGE LEARNING - CONSIGNMENT
Programming with Microsoft Visual Basic 2017
Computer Science
ISBN:9781337102124
Author:Diane Zak
Publisher:Cengage Learning
C++ for Engineers and Scientists
Computer Science
ISBN:9781133187844
Author:Bronson, Gary J.
Publisher:Course Technology Ptr
Microsoft Visual C#
Computer Science
ISBN:9781337102100
Author:Joyce, Farrell.
Publisher:Cengage Learning,
EBK JAVA PROGRAMMING
Computer Science
ISBN:9781305480537
Author:FARRELL
Publisher:CENGAGE LEARNING - CONSIGNMENT
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