Problem Solving with C++ (10th Edition)
10th Edition
ISBN: 9780134448282
Author: Walter Savitch, Kenrick Mock
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 12.1, Problem 5STE
Suppose you want to change the implementation of the class DigitalTime given in Displays 12.1 and 12.2. Specifically, you want to change the way the time is recorded. Instead of using the two private variables hour and minute, you want to use a single (private) int variable, which will be called minutes. In this new implementation, the private variable minutes will record the time as the number of minutes since the time 0:00 (that is, since midnight). So 1:30 is recorded as 90 minutes, since it is 90 minutes past midnight. Describe how you need to change the interface and implementation files shown in Displays 12.1 and 12.2. You need not write out the files in their entirety; just indicate what items you need to change and how, in a very general way, you would change them.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
In this assignment, you will need to design and implement a class Country (Country.java) that stores the name of the country, its population, and its area. Then write a program (LargestCountry.java) that reads countries from a “coutrydata.txt” and prints • The country with the largest area. • The country with the largest population. • The country with the largest population density (people per square mile). To make it concrete, the followings are the suggested tasks you need to perform: 1.1 Country Class In the first file Country.java, create a class named Country that models a country. It should contain at least the followings (However, you can add any other methods if you like): • Private instance variables name, population, and area; • A constructor takes all three inputs (the name, population and area); • Three getter methods to return each of three instance variables (accessor method); • One getter method to return country population density (accessor method); • Three setter…
In java language
Write a Rectangle class. A Rectangle has properties of width and length. You construct a Rectangle object by providing the width and length in that order. If no width and length are provided to the constructor, construct a Rectangle with width 0.0 and length 0.0. We want to be able to get and set both the width and the length independently. We also want to be able to ask for the area of the rectangle and the perimeter of the rectangle.
What will the object need to remember? width and length - those are the instance variables.
Rectangle class has these constructors :
public Rectangle() - Constructs a new rectangle with width and length of 0.0.
public Rectangle(double width, double length) - Constructs a new rectangle with the given width and length. Remember that the job of the constructor is to initialize the instance variables.
It has these methods.
public double getWidth() - Gets the width of this Rectangle
public double getLength() - Gets the length of this…
In java language
Write a Rectangle class. A Rectangle has properties of width and length. You construct a Rectangle object by providing the width and length in that order. If no width and length are provided to the constructor, construct a Rectangle with width 0.0 and length 0.0. We want to be able to get and set both the width and the length independently. We also want to be able to ask for the area of the rectangle and the perimeter of the rectangle.
What will the object need to remember? width and length - those are the instance variables.
Rectangle class has these constructors :
public Rectangle() - Constructs a new rectangle with width and length of 0.0.
public Rectangle(double width, double length) - Constructs a new rectangle with the given width and length. Remember that the job of the constructor is to initialize the instance variables.
It has these methods.
public double getWidth() - Gets the width of this Rectangle
public double getLength() - Gets the length of this…
Chapter 12 Solutions
Problem Solving with C++ (10th Edition)
Ch. 12.1 - Suppose that you are defining an ADT class and...Ch. 12.1 - Which of the following files has a name that ends...Ch. 12.1 - Prob. 3STECh. 12.1 - Suppose you define a class in separate files and...Ch. 12.1 - Suppose you want to change the implementation of...Ch. 12.1 - What is the difference between an ADT you define...Ch. 12.2 - Consider the program shown in Display 12.5. Could...Ch. 12.2 - In Self-Test Exercise 7, we saw that you could not...Ch. 12.2 - Prob. 9STECh. 12.2 - Prob. 10STE
Ch. 12.2 - Consider the following function declarations from...Ch. 12.2 - Would the program in Display 12.8 behave any...Ch. 12.2 - Prob. 13STECh. 12.2 - In Display 12.7 there are two groupings for the...Ch. 12 - Add the following member function to the ADT class...Ch. 12 - Prob. 3PCh. 12 - Redo Practice Programs 2 from Chapter 11, but this...Ch. 12 - This Practice Program explores how the unnamed...Ch. 12 - Prob. 1PPCh. 12 - Redo (or do for the first time) Programming...Ch. 12 - Prob. 3PP
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
Rewrite the definition of the method writeoutput for the class Undergraduate in Listing 8.4, using getName and ...
Java: An Introduction to Problem Solving and Programming (8th Edition)
A file that contains a Flash animation uses the __________ file extension. a. .class b. .swf c. .mp3 d. .flash
Web Development and Design Foundations with HTML5 (9th Edition) (What's New in Computer Science)
Consider the adage Never ask a question for which you do not want the answer. a. Is following that adage ethica...
Experiencing MIS
Consider the adage Never ask a question for which you do not want the answer. a. Is following that adage ethica...
Using MIS (10th Edition)
Do the insertMoney and printTicket methods have return statements? Why do you think this might be? Do you notic...
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
- I'm having trouble understanding how to input the values needed to use the def of getInch and getCm.arrow_forwardWrite a program in the Java language requires the management of university students, where student data (name, student number, and specialization) are saved, and then he can add and delete study materials for the current semester, and you can also add the grade for each subject (with the addition of the final code for the degree automatically).Note: The class principle is used to solve this assignment.arrow_forwardWrite a Rectangle class. A Rectangle has properties of width and length. You construct a Rectangle object by providing the width and length in that order. If no width and length are provided to the constructor, construct a Rectangle with width 0.0 and length 0.0. We want to be able to get and set both the width and the length independently. We also want to be able to ask for the area of the rectangle and the perimeter of the rectangle. What will the object need to remember? width and length - those are the instance variables. Rectangle class has these constructors : public Rectangle() - Constructs a new rectangle with width and length of 0.0. public Rectangle(double width, double length) - Constructs a new rectangle with the given width and length. Remember that the job of the constructor is to initialize the instance variables. It has these methods. public double getWidth() - Gets the width of this Rectangle public double getLength() - Gets the length of this Rectangle public void…arrow_forward
- Implement the below pseudo-code in a Java program using a while loop and aswitch-case statement. The program should be well structured, and the taskperformed under each option (at least options 'b' to 'e') should be implementedas a separate method.NOTE: The Scanner class does not have a method to input a character. Inorder to read a character from the keyboard, use one of the following methods(after declaring the Scanner object):static Scanner kb = new Scanner(System.in);1. char ch = kb.nextLine().charAt(0); OR2. char ch = kb.nextLine().toLowerCase().charAt(0);where kb is a Scanner class object.The second method above also converts the input to lowercase, which is oftenuseful. Though these methods allow the user to input more than one characteron the input line, the rest of the line (after capturing the first character withcharAt(0)) is discarded.If you also want to ignore the leading spaces before the first character thenuse:1. char ch = kb.nextLine().trim().charAt(0); OR2. char ch =…arrow_forwardUsing the card.java class file, write a program to simulate a Deck of Cards. See Programming Project 8.7 (PP 8.7) from page 403 on textbook for a description of what your program needs to do. Note that although the book description of the problem states that you should write the Card class, I do not want you to do that. You must use the Card file exactly as it is provided (NO modifications) and only write the DeckOfCards and Driver classes. public class Card{public final static int ACE = 1;public final static int TWO = 2;public final static int THREE = 3;public final static int FOUR = 4;public final static int FIVE = 5;public final static int SIX = 6;public final static int SEVEN = 7;public final static int EIGHT = 8;public final static int NINE = 9;public final static int TEN = 10;public final static int JACK = 11;public final static int QUEEN = 12;public final static int KING = 13; public final static int CLUBS = 1;public final static int DIAMONDS = 2;public final static int…arrow_forward4. Write a program that computes the area of a circular region (the shaded area in the diagram) given the radii of the inner and the outer circles, rị and r, respectively. We compute the area of the circular region by subtracting the area of the inner circle from the area of the outer circle. Define a Circle class that has methods to compute the area and circumference. You set the circle's radius with the setRadius method or via a constructor.arrow_forward
- We're going to explore the law of large numbers here with a dice rolling program. Seed the random number generator with the current time and then roll three 6-sided dice (often described as 3d6) a total of 1,000,000 times and keep track of the number of times each sum 3 - 18 occurs. Be sure to separate all functions and methods (if you chose to use a class or structure) into both the prototype and an implementation below the main. 1. Build a regular c-type function that returns a random number between 3 - 18. This will simulate a single roll of three dice. Use the prototype: int rollDice(void);2. In the main, roll the dice 1,000,000 times and tally up the results in an array. I DO NOT want each individual roll printed to screen. Let the index represent the number rolled and the value will represent the number of times that number has been rolled. For example, a[3] = 5357 a[4] = 14750...a[18] = 4981 This array set-up will mean that the result 3 occurred 5,357 times and the…arrow_forwardjava. write grading program for a class with the following grading policies. thers a total of 2 quizzes, each graded on the basis of 10 points. theeres is 1 midterm exam and one final exam, each graded on the basis of 100 points. final exam counts for 50% of the grade, the midterm counts for 25%, and the 2 quizzes together count for a total of 25%. (Do not forget to normalize the quiz scores.) letter grade will be given based on the following criterion: 90 – 100 A 80 – 89 B 70 – 79 C 60 – 69 D 0 – 59 E program will read student’s scores from a txf file, save them in an arrayor arrays), process the arrays), print the student’s record, which consists of the name, 2 quiz and 2 exam scores as well along with students avg numscore for the course and final letter grade. please noteAll the scores are integers and a student name consists of no more than 10 characters. justify output filearrow_forwardAdd a method called multiplesOfFive to the Exercise class. The method must have a void return type and take a single int parameter called limit. In the body of the method, write a while loop that prints out all multiples of 5 between 10 and limit (inclusive) on a single line. For instance, if the value of limit were 15 then the method will print: 10 15 You can use the printEvenNumbers method that is already in the Exercise class as an example to help you work out how to complete this method. In the main method of the Main class, add a call on the Exercise object to your multiplesOfFive method that prints the multiples of 5 between 10 and 25. Add a method called sum to the Exercise class. The method must have a void return type and take no parameters. In the body of the method, write a while loop to sum the values 1 to 10 and print the sum once the loop has finished. In the main method of the Main class, add a call on the Exercise object to your sum method. Check that it prints: 55 Add…arrow_forward
- Write a program to print the names of books by creating a book class. If no name is passed while creating an object of book class, then the name should be "Unknown", otherwise the name should be equal to the String value passed while creating object of book class.arrow_forwardImplement the main method below in a class called Grade. The program should read integer points (use the Scanner class) and print the grade (“A”, “B”, “C”, “D”, or “F”) based on the final score associated with a student. Grades are classified as follows: Number of Points Final Grade Greater than or equal to 90 A Between 80 (inclusive) and 90 (exclusive) B Between 70 (inclusive) and 80 (exclusive) C Between 60 (inclusive) and 70 (exclusive) D Less than 60 F Restrictions/Assumptions Use the message “Enter final score” to prompt the user to enter the number of points. Use the Scanner class to read the number of points, i.e., Scanner sc = new Scanner(System.in); Use System.out.println(...) to print the final grade. Assume that the user correctly enters an integer score. Start with this code: import java.util.Scanner; public class Grade { public static void main(String[] args) { For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac)arrow_forwardConsider writing a program to manage a collection of movies. There are three kinds of movies in the collection: dramas, comedies, and documentaries. The collector would like to keep track of each movie's title, the name of its director, and the year the movie was made. Some operations are to be implemented for all movies, and there will also be special operations for each of the three different kinds of movies. How would you design the class(es) to represent this system of movies? Your design should implement the concept of Overridingarrow_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 Education
Starting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSON
Digital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSON
Database Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage Learning
Programmable 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
6 Stages of UI Design; Author: DesignerUp;https://www.youtube.com/watch?v=_6Tl2_eM0DE;License: Standard Youtube License