explain mvc and tell difference between mvc and mvvm

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MVC is a design pattern that separates an application into three main components: Model, View, and Controller. MVVM is a variation of MVC with an added ViewModel layer.

MVC stands for Model-View-Controller, where Model represents the data, View represents the UI, and Controller acts as an intermediary between Model and View.
MVVM stands for Model-View-ViewModel, which adds a ViewModel layer between the View and Model. ViewModel exposes data and methods to the View.
In MVC, the View directly interacts with the Model, while in MVVM, the View interacts with the ViewModel, which in turn interacts with the Model.
MVVM is often used in modern iOS development with frameworks like SwiftUI and Combine, providing a more reactive and declarative approach to building user interfaces.

explain mvc and tell difference between mvc and mvvm

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