what is MVC Why we use it? code example

Example: what is mvc architecture

The Model-View-Controller (MVC) is an architectural pattern that separates an 
application into three main logical components: the model, the view, and 
the controller. Each of these components are built to handle specific 
development aspects of an application. MVC is one of the most frequently used 
industry-standard web development framework to create scalable and extensible
projects.