Starting Out with C++ from Control Structures to Objects (9th Edition)
9th Edition
ISBN: 9780134498379
Author: Tony Gaddis
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 5, Problem 25PC
Program Plan Intro
Using Files-Student Line Up
- Include the required header files to the program.
- Define the “main()” function.
- Declare the required variables.
- Open the input file and read it until the no more data to read from the file.
- Close the file.
- Print the front and back name of the student.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
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…
Average Number of WordsIf you have downloaded the source code from the Computer Science Portal you will find a filenamed text.txt in the Chapter 08 folder. The text that is in the file is stored as one sentenceper line. Write a program that reads the file’s contents and calculates the average number ofwords per sentence.(You can access the Computer Science Portal at www.pearsonhighered.com/gaddis.)
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 Programming
Chapter 5 Solutions
Starting Out with C++ from Control Structures to Objects (9th Edition)
Ch. 5.1 - What will the following program segments display?...Ch. 5.3 - Write an input validation loop that asks the user...Ch. 5.3 - Write an input validation loop that asks the user...Ch. 5.3 - Write an input validation loop that asks the user...Ch. 5.5 - Prob. 5.5CPCh. 5.6 - Name the three expressions that appear inside the...Ch. 5.6 - You want to write a for loop that displays I love...Ch. 5.6 - Prob. 5.8CPCh. 5.6 - Write a for loop that displays your name 10 times.Ch. 5.6 - Write a for loop that displays all of the odd...
Ch. 5.6 - Write a for loop that displays every fifth number,...Ch. 5.8 - Write a for loop that repeats seven times, asking...Ch. 5.8 - In the following program segment, which variable...Ch. 5.8 - Prob. 5.14CPCh. 5.8 - How would you modify Program 5-13 so any negative...Ch. 5.11 - What is an output file? What is an input file?Ch. 5.11 - What three steps must be taken when a file is used...Ch. 5.11 - What is the difference between a text file and a...Ch. 5.11 - Budget Analysis Write a program that asks the user...Ch. 5.11 - Random Number Guessing Game Write a program that...Ch. 5.11 - What type of file stream object do you create if...Ch. 5.11 - Write a short program that uses a for loop to...Ch. 5.11 - Write a short program that opens the file created...Ch. 5 - Why should you indent the statements in the body...Ch. 5 - Describe the difference between pretest loops and...Ch. 5 - Why are the statements in the body of a loop...Ch. 5 - What is the difference between the while loop and...Ch. 5 - Which loop should you use in situations where you...Ch. 5 - Which loop should you use in situations where you...Ch. 5 - Which loop should you use when you know the number...Ch. 5 - Why is it critical that counter variables be...Ch. 5 - Why is it critical that accumulator variables be...Ch. 5 - Why should you be careful not to place a statement...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 data type do you use when you want to create...Ch. 5 - Why should a program close a file when its...Ch. 5 - What is a files read position? Where is the read...Ch. 5 - To ______ a value means toincreaseit by one,and to...Ch. 5 - Prob. 17RQECh. 5 - Prob. 18RQECh. 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 variablethatcountsthe number of...Ch. 5 - A(n) _____ is a sum of numbers that accumulates...Ch. 5 - A(n) _____ is a variable that is initialized to...Ch. 5 - Prob. 27RQECh. 5 - The _____ loop always iterates at least once.Ch. 5 - The _____ and _____ loops will not iterate at all...Ch. 5 - The _____ loop is ideal for situations that...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...Ch. 5 - The _____ statement causes _____ a loop to skip...Ch. 5 - Write a while loop that lets the user enter a...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 10 rows of #...Ch. 5 - Convert the following while loop to a do-while...Ch. 5 - Convert the following do-while loop to a while...Ch. 5 - Convert the following while loop to a for loop:...Ch. 5 - Convert the following for loop to a while loop:...Ch. 5 - Write code that does the following: Opens an...Ch. 5 - Write code that does the following: Opens the...Ch. 5 - Modify the code that you wrote in Question 45 so...Ch. 5 - T F The operand of the increment and decrement...Ch. 5 - T F The cout statement in the following program...Ch. 5 - T F The cout statement in the following program...Ch. 5 - T F The while loop is a pretest loop.Ch. 5 - T F The do-while loop is a pretest loop.Ch. 5 - T F The for loop is a posttest loop.Ch. 5 - T F It is not necessary to initialize counter...Ch. 5 - T F All three of the for loops expressions may be...Ch. 5 - T F One limitation of the for loop is that only...Ch. 5 - T F Variables may be defined inside the body of a...Ch. 5 - T F A variable may be defined in the...Ch. 5 - T F In a nested loop, the outer loop executes...Ch. 5 - T F In a nested loop, the inner loop goes through...Ch. 5 - T F To calculate the total number of iterations of...Ch. 5 - T F The break statement causes a loop to stop the...Ch. 5 - T F The continue statement causes a terminated...Ch. 5 - T F In a nested loop, the break statement only...Ch. 5 - Prob. 64RQECh. 5 - // Find the error in this program. #include...Ch. 5 - // This program adds two numbers entered by the...Ch. 5 - // This program uses a loop to raise a number to a...Ch. 5 - // This program averages a set of numbers....Ch. 5 - // This program displays the sum of two numbers....Ch. 5 - // This program displays the sum of the numbers...Ch. 5 - Sum of Numbers Write a program that asks the user...Ch. 5 - Characters for the ASCII Codes Write a program...Ch. 5 - Ocean Levels Assuming the oceans level is...Ch. 5 - Calories Burned Running on a particular treadmill...Ch. 5 - Membership Fees Increase A country club, which...Ch. 5 - Distance Traveled The distance a vehicle travels...Ch. 5 - Pennies for Pay Write a program that calculates...Ch. 5 - Math Tutor This program started in Programming...Ch. 5 - Hotel Occupancy Write a program that calculates...Ch. 5 - Average Rainfall Write a program that uses nested...Ch. 5 - Population Write a program that will predict the...Ch. 5 - Celsius to Fahrenheit Table In Programming...Ch. 5 - The Greatest and Least of These Write a program...Ch. 5 - Student Line Up A teacher has asked all her...Ch. 5 - Payroll Report Write a program that displays a...Ch. 5 - Savings Account Balance Write a program that...Ch. 5 - Sales Bar Chart Write a program that asks the user...Ch. 5 - Prob. 18PCCh. 5 - Budget Analysis Write a program that asks the user...Ch. 5 - Random Number Guessing Game Write a program that...Ch. 5 - Random Number Guessing Game Enhancement Enhance...Ch. 5 - Square Display Write a program that asks the user...Ch. 5 - Pattern Displays Write a program that uses a loop...Ch. 5 - Using FilesNumeric Processing If you have...Ch. 5 - Prob. 25PCCh. 5 - Personal Web Page Generator Write a program that...
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
- Chapter 7 - Programming Challenge 15 15. World Series Champions If you have downloaded this book’s source code (the companion Web site is available at www.pearsonhighered.com/gaddis), you will find a file named WorldSeriesWinners.txt. This file contains a chronological list of the winning teams in the World Series from 1903 through 2009. (The first line in the file is the name of the team that won in 1903, and the last line is the name of the team that won in 2009. Note that the World Series was not played in 1904 or 1994, so those years are skipped in the file.) Write a program that lets the user enter the name of a team, and then displays the number of times that team has won the World Series in the time period from 1903 through 2009. Tip: Read the contents of the WorldSeriesWinners.txt file into an ArrayList. When the user enters the name of a team, the program should step through the ArrayList, counting the number of times the selected team appears You only need to submit the…arrow_forwardProgram Description: The project is a student management system which maintains student records in a simple text file. Your task is to write a program to save a list of students records in a FILE and then perform several operations on this FILE. Your program will ask user to choose the option from a menu. The 3 major function in menu are: ADD STUDENT FIND STUDENT PRINT LIST Exit How it Works The menu is handled by do while and switch statement. Sample output The Methods to be implemented are as follows: 1. ADDSTUDENT This method will add a new student to the file. It takes 3 parameters ( student name, id, and GPA). Your program must ask the user to enter the details of new students: Name, ID and GPA 2. FINDSTUDENT This method will search for a student with his/her id in the file. If the student is found it will print her/his record to the output. If the student is not found it will print “There is no record of this student in this system” 3. PRINTLIST This method will print all the…arrow_forwardPHONE DIRECTORYDescription: Create a phonebook directory that will store the contact numbers of N persons. Your program should allow the user to add, view, delete, and update the contacts in the phonebook. Note that one person can have multiple contact numbers. The program will stop when the user command is ‘X’. Program command and entry should not be case-sensitive. That means commands ‘I’ or ‘i’ and the name “Jacky” or “JACKY” are the same. Each contact number can be 7 digits or 11 digits only. The user should input a string containing the command, name, and contact number(s) (Limit the contact number of each person to three). This string should be broken down into fields in order to separate the different values and store them in their appropriate variables. Use linked list in the implementation. Your node must declare at least four instance variables. Program flow: Command> I Jacky 09211234567 Remarks: New contact has been added. Command> V Jacky Contact…arrow_forward
- 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)arrow_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_forward1. 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_forward
- Submission: Combine the code files for Q1 and Q2 as a zip file and submit in Moodle Question 1: Write a Program that to enter Student Name, Grade and print it to the screen with below requirements . . . . Asks the users how many student grades they want to enter. Based on that number the program should setup a loop to ask the user to enter student name and the student grade. Save this information using 2 arrays At the end the program must show the student names and grades with 1 student on each line on the screen Program should use Arrays and loops to achieve the task.arrow_forwardBody Mass Index Write a program that reads names, weights, and heights from bmi.dat (provided with starter code; do not change the file name). Use the information to calculate and displays a person’s body mass index (BMI). The BMI is often used to determine whether a person with a sedentary lifestyle is overweight or underweight for his or her height. A person’s BMI is calculated with the following formula: BMI = weight × 703 / height2 where weight is measured in pounds and height is measured in inches. The file is in the format name weightInKG heightInCM You will read the name, weight and height for 4 people from the file, and you will need to convert the weights in the file to pounds (note that 1 kilogram = 2.2 pounds) and the heights to inches (2.54 cm = 1 inch). The program should display the person's name along with the calculated BMI and a message indicating whether the person has optimal weight, is underweight, or is overweight. Your output should look like A person’s weight…arrow_forwardWrite code that does the following: Opens a file named NumberList.txt, uses a loop to write the numbers 1 through 100 to the file, and then closes the file. Opens the NumberList.txt file and reads all of the numbers from the file and displays them, and then closes the file. Opens the NumberList.txt file and reads all of the numbers from the file, calculate the sum of these numbers and displays their total. Opens a file named NumberList.txt for writing, but does not erase the contents of the file if it already exists.arrow_forward
- JAVA INTRO Create a program that generates a report that displays a list of students, classes they are enrolled in and the professor who teaches the class. There are 3 files that provide the input data: 1. FinalRoster.txt List of students and professors ( The first value of each row indicates if it is a student or professor; S means a student , P means a professor) Student and Professor have different data Student row: "S",Student Name, StudentID Professor row: "P", Professor Name, Professor ID, Highest Education 2. FinalClassList.txt List of classes and professor who teach them Each row contains the following information: ClassID, ClassName, ID of Professor who teach that class The professor ID in this file matches the Professor ID in FinalRoster.txt. 3. FinalStudentClassList.txt List of classes the students are enrolled in. (StudentID, ClassID) Student ID matches Student ID in FinalRoster.txt and ClassID matches Class ID in FinalClassList.txt The output shall be…arrow_forwardPython A Personal Fitness Tracker is a wearable device that tracks your physical activity, calories burned, heart rate, sleeping patterns, and so on. One common physical activity that most ofthese devices track is the number of steps you take each day The steps.txt file contains the number of steps a person has taken each day for a year. There are 365 lines in the file, and each line contains the number of steps taken during a day. Write a program that reads the file, then displays the average number of steps taken for each month Your program should use a function to calculatethe averagenumber of steps. You will need to pass more than one argument to the function.arrow_forwardJAVA INTRO The answer last time was incorrect It did not use text files!!!!. Create a program that generates a report that displays a list of students, classes they are enrolled in and the professor who teaches the class. There are 3 files that provide the input data: 1. FinalRoster.txt List of students and professors ( The first value of each row indicates if it is a student or professor; S means a student , P means a professor) Student and Professor have different data Student row: "S",Student Name, StudentID Professor row: "P", Professor Name, Professor ID, Highest Education 2. FinalClassList.txt List of classes and professor who teach them Each row contains the following information: ClassID, ClassName, ID of Professor who teach that class The professor ID in this file matches the Professor ID in FinalRoster.txt. 3. FinalStudentClassList.txt List of classes the students are enrolled in. (StudentID, ClassID) Student ID matches Student ID in FinalRoster.txt and ClassID…arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
EBK JAVA PROGRAMMINGComputer ScienceISBN:9781337671385Author:FARRELLPublisher:CENGAGE LEARNING - CONSIGNMENT
EBK JAVA PROGRAMMING
Computer Science
ISBN:9781337671385
Author:FARRELL
Publisher:CENGAGE LEARNING - CONSIGNMENT