Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
abstract keyword in C#
The abstract keyword in C# is used for abstract classes. An abstract class in C# includes abstract and nonabstract methods. You cannot instantiate an abstract class.
Example of an abstract class Vehicle and abstract method display() −
public abstract class Vehicle {
public abstract void display();
}The abstract class has derived classes: Bus, Car, and Motorcycle. The following is an implementation of the Car derived class −
public class Car : Vehicle {
public override void display() {
Console.WriteLine("Car");
}
}Example
The following is an example of abstract classes in C# −
using System;
public abstract class Vehicle {
public abstract void display();
}
public class Bus : Vehicle {
public override void display() {
Console.WriteLine("Bus");
}
}
public class Car : Vehicle {
public override void display() {
Console.WriteLine("Car");
}
}
public class Motorcycle : Vehicle {
public override void display() {
Console.WriteLine("Motorcycle");
}
}
public class MyClass {
public static void Main() {
Vehicle v;
v = new Bus();
v.display();
v = new Car();
v.display();
v = new Motorcycle();
v.display();
}
}Output
Bus Car Motorcycle
Updated on: 19-Jun-2020
522 Views
Advertisements