- Abstraction is a process in which only the functionality is shown and it’s definition remains hidden. Abstraction can be achieved by Abstract classes.
- An abstract class does not contain any definition and is implemented in another outside class.
- An abstract method or class has abstract keyword before it’s return type.
// An abstract method.
public abstract void vol();
// An abstract class.
asbtract class AbstractExample- If a class is made abstract then it’s methods can also be of abstract type and at least one method will be of abstract type.
Inheritance
- Another way to achieve abstraction is by creating interfaces. An Interface only contains the declaration of methods data members and does not have any implementation of it.
- An Interface must be inherited by another class to make the implementations of interface’s methods.
using System;
interface Fruits{
void enter();
void show();
}
//Interface is inherited by another class and implement.
class Basket: Fruits{
int no;
public void enter()
{
Console.WriteLine("Enter the number of fruits available: ");
no = Console.ReadLine();
}
public void show()
{
Console.WriteLine("Available number od fruits are: ", no);
}
}