Microsoft Visual C#
7th Edition
ISBN: 9781337102100
Author: Joyce, Farrell.
Publisher: Cengage Learning,
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Textbook Question
Chapter 9, Problem 1CP
In previous chapters, you have created programs for the Greenville Idol competition. Now create a Contestant class with the following characteristics:
• The Contestant class contains public static arrays that hold talent codes and descriptions. Recall that the talent categories are Singing Dancing, Musical instrument, and Other.
• The class contains an auto-implemented property that holds a contestant’s name.
• The class contains fields for a talent code and description. The set accessor for the code assigns a code only if it is valid. Otherwise, it assigns I for Invalid. The talent description is a read-only property that is assigned a value when the code is set.
Modify the GreenvilleRevenue
• The program prompts the user for the number of contestants in this year’s competition; the number must be between 0 and 30. The program continues to prompt the user until a valid value is entered.
• The expected revenue is calculated and displayed. The revenue is $25 per contestant.
• The program prompts the user for names and talent codes for each contestant entered. Along with the prompt for a talent code, display a list of the valid categories.
• After data entry is complete, the program displays the valid talent categories and then continuously prompts the user for talent codes and displays the names of all contestants in the category. Appropriate messages are displayed if the entered code is not a character or a valid code.
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3. Problem Description: Define the Circle2D class that contains:
Two double data fields named x and y that specify the center of the circle with get
methods.
• A data field radius with a get method.
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A no-arg constructor that creates a default circle with (0, 0) for (x, y) and 1 for radius.
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A constructor that creates a circle with the specified x, y, and radius.
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A method getArea() that returns the area of the circle.
•
A method getPerimeter() that returns the perimeter of the circle.
•
•
•
A method contains(double x, double y) that returns true if the specified point (x, y) is inside
this circle. See Figure (a).
A method contains(Circle2D circle) that returns true if the specified circle is inside this
circle. See Figure (b).
A method overlaps (Circle2D circle) that returns true if the specified circle overlaps with this
circle. See the figure below.
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Figure (a) A point is inside the circle. (b) A circle is inside another circle.
(c) A circle overlaps another…
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Chapter 9 Solutions
Microsoft Visual C#
Ch. 9 - Assume that you have created a class named...Ch. 9 - Prob. 9RQCh. 9 - Assume that you have created a class named...Ch. 9 - Create an application named SalesTransactionDemo...Ch. 9 - Create an application named CarDemo that declares...Ch. 9 - Create a program named SalesTaxDemo that declares...Ch. 9 - Prob. 8ECh. 9 - Write a program named DemoJobs for Harolds Home...Ch. 9 - a. Write a FractionDemo program that instantiates...Ch. 9 - Prob. 1DE
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