what is API?

Answer 1

Application Programming Interfaces.

Answer 2

Say you have a program, you want other people to configure it or develop plugins. You give them a set of properties and methods they can use. That's an API.

Answer 3

Application program interface (API) is a set of routines, protocols, and tools for building software applications. An API specifies how software components should interact. Additionally, APIs are used when programming graphical user interface (GUI) components.

Answer 4

An API is a collection of handy functions. They can help you to simplify your code or extends the language possibility.