Difference between abstract and interface

Question

Accepted Answer

Abstract classes are partially implemented classes that can have both abstract and non-abstract members. Interfaces are fully abstract classes that define a contract for implementing classes.

Abstract classes can have constructors, fields, and non-abstract methods, while interfaces cannot.
A class can inherit from only one abstract class, but it can implement multiple interfaces.
Abstract classes can provide default implementations for some methods, while interfaces cannot.
Interfaces are used to achieve multiple inheritance-like behavior in C#.
Example: An abstract class 'Animal' can have a non-abstract method 'Eat()', while an interface 'IFlyable' can have a method 'Fly()'.

Accepted Answer

abstract class :- It allows you to create functionality that subclasses can implement or override.

interface :- only allows you to define functionality, not implement it.

it Supports multiple inheritance.

Difference between abstract and interface

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