Questions and Answers
What is C#?
A modern, high-level, general-purpose, object-oriented programming language.
What is a framework?
A platform for developing software applications.
Which of the following are examples of automobiles?
What is a class in object-oriented programming?
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What is an object in object-oriented programming?
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An object’s state is the data or information it contains, and behavior is often represented by ______.
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Match the following examples with their classes:
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Methods belong to a class and cannot be accessed until an object is created.
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Access modifiers specify how a class can be accessed.
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Study Notes
C# Programming Language
- C# is a modern, high-level, general-purpose, object-oriented programming language.
- It serves as the principal language for the .NET framework, which is a platform for developing software applications.
- .NET framework includes predefined classes and functions for processing input, managing hardware devices, and interacting with system software.
- C# allows the creation of applications across standalone, web-based, and mobile APIs, making it versatile for multiple devices.
Key Concepts in C#
- Essential concepts include Classes, Objects, and Methods.
Classes and Objects
- An ATM is an example of a class. It requires an object, such as an inserted card, to function.
- When a card (object) is inserted into an ATM (class), it retrieves information like account details and balance.
- Operations, such as withdrawing money or checking balances, are methods of the ATM class and can only be accessed through an object.
Defining a Class
- A class acts as a user-defined blueprint or prototype from which objects are created.
- Example: Automobile as a class, with subclasses including Car, Bus, and Bike.
- Specific examples of objects from classes include:
- Car class: Polo, i20
- Bus class: Quantum, Minibus
- Bike class: Scooter, Cruiser
Defining Objects
- An object is an instance derived from a created class, each with its own state and behavior.
- An object's state represents the data it holds, while its behavior is often defined by methods.
Defining Behavior in a Class
- A class can represent an individual, such as a Person, and define attributes (name, height, weight, gender, age) and behaviours (walking, running, jumping, speaking, sleeping).
- Each object of the class can have different attributes while sharing the same set of behaviors.
Creating a Class
- Classes are declared using the keyword
class, followed by the class name, with members enclosed in curly braces. - Key components of a class include:
- Access modifiers (private, public, internal) that dictate access rules.
- Class keyword and name.
- Class members comprising properties, data fields, and methods operating on the data.
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Description
This quiz covers the fundamentals of C#, a modern object-oriented programming language integral to the .NET framework. Explore its key features, applications, and the significance of predefined classes and functions for software development across various platforms.
