Difference between abstract class and Interface in C#

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Accepted Answer

Abstract class can have implementation details, while interface only contains method signatures.

Abstract class can have constructors, fields, and methods with implementation details, while interface can only have method signatures.
A class can inherit from only one abstract class, but can implement multiple interfaces.
Abstract classes are used when some common functionality needs to be shared among multiple classes, while interfaces are used to define a contract that classes must adhere to.
Example: Abstract class 'Animal' with method 'Eat' implemented, Interface 'IFlyable' with method 'Fly' defined.

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