Starting out with Visual C# (4th Edition)
4th Edition
ISBN: 9780134382609
Author: Tony Gaddis
Publisher: PEARSON
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Chapter 9.4, Problem 9.16CP
Explanation of Solution
Creating an array of a class type:
- • An array of a class type store the objects of the same class type.
- • Each object can be stored in an array as an element in the array of the class.
- • An integer array stores the integer values in the array.
- • The values of the integer array are stored with default values of array data type, before storing the elements in the array variables.
- • For example, an array of integer data type is created as follows:
int[] integerValues=new int[5];
- • In the above given statement, an integer array of size “5” stores the default values of the integer array with “0” before storing the user given values...
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When you create a array of a class type, with what value will each element of the array be initialized?
Lotto Program C++Write a program that simulates the Powerball lottery. In Powerball, a ticket is comprised of 5 numbers between 1 and 69 that must be unique, and a Powerball number between 1 and 26. The Powerball does not have to be unique.
Hint: You can use an array to represent the 5 unique numbers between 1 and 69, and an integer variable to represent the powerball.
The program asks the player if they'd like to select numbers or do a 'quickpick', where the numbers are randomly generated for them. If they opt to select numbers, prompt them to type the numbers in and validate that they are unique (except the powerball), and in the correct range.
The program then generates a 'drawing' of 5 unique numbers and a Powerball, and checks it against the user's lotto ticket. It assigns winnings accordingly. Because it is so rare to win the lottery, I suggest hard coding or printing values to when testing the part of the program that assigns winnings.
10. Lottery Application
Write a Lottery class that simulates a lottery. The class should have an array of five integers
named lotteryNumbers. The constructor should use the Random class (from the Java API) to
generate a random number in the range of 0 through 9 for each element in the array. The
class should also have a method that accepts an array of five integers that represent a per-
son's lottery picks. The method is to compare the corresponding elements in the two arrays
and return the number of digits that match. For example, the following shows the
lotteryNumbers array and the user's array with sample numbers stored in each. There are
two matching digits (elements 2 and 4).
lotteryNumbers array:
User's array:
7 4
4
2
1 3
7 3
In addition, the class should have a method that returns a copy of the lotteryNumbers array.
Demonstrate the class in a program that asks the user to enter five numbers. The program
should display the number of digits that match the randomly generated…
Chapter 9 Solutions
Starting out with Visual C# (4th Edition)
Ch. 9.1 - How is a class like a blueprint?Ch. 9.1 - Briefly describe the process of writing a class...Ch. 9.1 - What is a constructor?Ch. 9.1 - Prob. 9.4CPCh. 9.1 - When you pass an object that is an instance of a...Ch. 9.2 - What is a property?Ch. 9.2 - Prob. 9.7CPCh. 9.2 - Prob. 9.8CPCh. 9.2 - Prob. 9.9CPCh. 9.2 - Prob. 9.10CP
Ch. 9.3 - What is a parameterized constructor?Ch. 9.3 - Prob. 9.12CPCh. 9.3 - Prob. 9.13CPCh. 9.3 - What happens if you write a class with no...Ch. 9.3 - Describe the purpose of the default constructor.Ch. 9.4 - Prob. 9.16CPCh. 9.4 - How can you initialize an array of a class type...Ch. 9.4 - Prob. 9.18CPCh. 9.5 - Prob. 9.19CPCh. 9.5 - When designing an object-oriented application, who...Ch. 9.5 - How do you identify the potential classes in a...Ch. 9.5 - What are a classs responsibilities?Ch. 9.5 - What two questions should you ask to determine a...Ch. 9.5 - Will all a class's actions always be directly...Ch. 9.6 - Prob. 9.25CPCh. 9.6 - Prob. 9.26CPCh. 9.6 - Prob. 9.27CPCh. 9.6 - Prob. 9.28CPCh. 9.6 - Prob. 9.29CPCh. 9 - Each object that is created from a class is called...Ch. 9 - Prob. 2MCCh. 9 - The first line of a class declaration is known as...Ch. 9 - The classs________ are the statements that define...Ch. 9 - A(n) _____ is a method that is automatically...Ch. 9 - A(n) is a special type of class member that allows...Ch. 9 - A special set of methods, known as_________, work...Ch. 9 - Prob. 8MCCh. 9 - The parameter of the set accessor is automatically...Ch. 9 - A can be read, but it cannot be modified. a....Ch. 9 - When the value of an item is dependent on other...Ch. 9 - A constructor that accepts arguments is known as...Ch. 9 - Prob. 13MCCh. 9 - Prob. 14MCCh. 9 - A methods ______ consists of the methods name and...Ch. 9 - A is a constructor that accepts no arguments. a....Ch. 9 - If you write a class with no constructor...Ch. 9 - Prob. 18MCCh. 9 - A classs responsibilities are_______. a. the...Ch. 9 - Prob. 20MCCh. 9 - Objects that are instances of a class are always...Ch. 9 - Prob. 2TFCh. 9 - A class is an object.Ch. 9 - It is a common practice to make all a classs...Ch. 9 - The same rules for naming variables apply to...Ch. 9 - If you need to make a property read only, you...Ch. 9 - If you try to pass a property to a ref or an out...Ch. 9 - Class fields are almost always declared public in...Ch. 9 - The get accessor can be thought of as a method...Ch. 9 - Constructors can accept arguments in the same way...Ch. 9 - It is legal to write a class without any...Ch. 9 - Objects that are instances of a class can be...Ch. 9 - Prob. 13TFCh. 9 - One way to find the classes needed for an...Ch. 9 - Prob. 15TFCh. 9 - By default, a controls Modifiers property is set...Ch. 9 - Prob. 1SACh. 9 - What are the advantages of storing classes in...Ch. 9 - How is a constructor used?Ch. 9 - What is the difference between a class and an...Ch. 9 - What convention do most programmers follow when...Ch. 9 - What is the value parameter? How is it created?Ch. 9 - What is executed any time a class property is...Ch. 9 - What is executed any rime a value is assigned to a...Ch. 9 - How can you protect class fields from accidental...Ch. 9 - Prob. 10SACh. 9 - Is it possible to pass initialization values to...Ch. 9 - How does the compiler distinguish a method from...Ch. 9 - What do you call the constructor that is provided...Ch. 9 - Prob. 14SACh. 9 - Prob. 15SACh. 9 - Prob. 16SACh. 9 - Prob. 17SACh. 9 - Write a statement that creates an instance of the...Ch. 9 - Write the accessors for a property named...Ch. 9 - Prob. 3AWCh. 9 - Look at the following description of a problem...Ch. 9 - Pet Class Create a class named Pet (similar to the...Ch. 9 - Car Class Create a class named Car that has the...Ch. 9 - Personal Information Class Create a class that...Ch. 9 - Employee Class Write a class named Employee that...Ch. 9 - RetailItem Class Write a class named RetailItem...Ch. 9 - Dorm and Meal Plan Calculator A university has the...Ch. 9 - E-Mail Address Book Create an application with a...
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