Starting out with Visual C# (4th Edition)
4th Edition
ISBN: 9780134382609
Author: Tony Gaddis
Publisher: PEARSON
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Chapter 10, Problem 4AW
Program Plan Intro
Overriding:
- • Method overriding means having multiple methods with same name and same signature in combination of base class and derived class.
- • The derived class method overrides the base class method when method in derived class has same name as method in base class.
- • For overriding the properties, the base class properties can be overridden in similar way that base class methods can be overridden.
- ○ The virtual property is a property that appears in a base class but expects to be overridden in a derived class.
- ○ In base class, programmer need to write “virtual” keyword in base class method declaration and “override” keyword in derived class method declaration.
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A class named Wave has a virtual property named Frequency. A class named Sound is derived from the Wave class. Write example code showing how the Frequency property might appear in the Sound class.
When you pass an object that is an instance of a class as an argument, what is passed into the parameter variable?
Pyhton Code:
Create a Pizza class which stores information about a single pizza. It contains the following:
-Instance variables to store the size of the pizza (small, medium or large), (1)the number of cheese toppings, (2)the number of pepperoni toppings, and the (3) number of mushroom toppings.
- Constructor: that takes four arguments and sets all of the corresponding instance variables
and that initializes all instance variables to the zero of their type.
- Methods to get (accessor) and set (mutator) each instance variable individually.
- A method called calcCost() that returns the cost of the pizza. Pizza cost is determined by: Small: $10 + $2 per topping Medium: $12 + $2 per topping Large: $14 + $2 per topping.
-A method which returns a string for the pizza size, quantity of each topping, and the pizza cost as calculated by the following example, a large pizza with 1 cheese, 2 pepperoni and 1 mushroom toppings should cost $22 (you can overwrite __str__).
Chapter 10 Solutions
Starting out with Visual C# (4th Edition)
Ch. 10.1 - In this section, we discussed base classes and...Ch. 10.1 - Prob. 10.2CPCh. 10.1 - What does a derived class inherit from its base...Ch. 10.1 - Look at the following code, which is the first...Ch. 10.1 - Briefly summarize the constructor issues in...Ch. 10.2 - Look at the following class definitions: class...Ch. 10.2 - Does the is a relationship work in reverse? Why or...Ch. 10.3 - What is the purpose of an abstract class?Ch. 10.3 - If a class is abstract, what cannot be done with...Ch. 10.3 - If a class is derived from a base class that has...
Ch. 10.3 - What must be done with an abstract property before...Ch. 10.3 - How can you create an abstract read-only property?Ch. 10 - When one object is a specialized version of...Ch. 10 - In an inheritance relationship, the_______ is the...Ch. 10 - In an inheritance relationship, the___________ is...Ch. 10 - Base classes are sometimes called____________. a....Ch. 10 - Derived classes are sometimes called______________...Ch. 10 - The refers to the base class. a. friend keyword b....Ch. 10 - Prob. 7MCCh. 10 - When a derived class method has the same name as a...Ch. 10 - The declares that a derived class is allowed to...Ch. 10 - The declares that this method overrides a method...Ch. 10 - A class that is not intended to be instantiated,...Ch. 10 - To declare a class as abstract, you use the...Ch. 10 - A regular, nonabstract class is sometimes called a...Ch. 10 - A(n) __________ is a method that appears in a base...Ch. 10 - A(n) __________ is a property that appears in a...Ch. 10 - __________ allows a base class reference variable...Ch. 10 - The base class inherits fields, properties, and...Ch. 10 - Polymorphism allows a class variable of the base...Ch. 10 - Properties in a base class cannot be overridden in...Ch. 10 - A base class reference variable can reference an...Ch. 10 - A statement that tries to use the new operator to...Ch. 10 - A class that is not intended to be instantiated,...Ch. 10 - When an abstract property appears in a class, it...Ch. 10 - What does a derived class inherit from its base...Ch. 10 - Look at the following code, which is the first...Ch. 10 - Can methods in the derived class directly access...Ch. 10 - When you create an instance of a derived class,...Ch. 10 - In what kind of situation would you want to use an...Ch. 10 - What is primary difference between an abstract...Ch. 10 - Can abstract classes also contain abstract...Ch. 10 - Write the first line of the definition for a...Ch. 10 - Look at the following class declarations: class...Ch. 10 - Write a parameterized constructor for a base class...Ch. 10 - Prob. 4AWCh. 10 - Create an abstract class called Star. Include an...Ch. 10 - Employee and ProductionWorker Classes Create an...Ch. 10 - ShiftSupervisor Class In a particular factory, a...Ch. 10 - TeamLeader Class In a particular factory, a team...Ch. 10 - Person and Customer Classes Design a class named...Ch. 10 - PreferredCustomer Class A retail store has a...
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