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# Introduction

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This section informs on interoperability, that is, information exchange, between Erlang and other programming languages. The included examples mainly treat interoperability between Erlang and C.

## Purpose

The purpose of this tutorial is to describe different interoperability mechanisms that can be used when integrating a program written in Erlang with a program written in another programming language, from the Erlang programmer's perspective.

## Prerequisites

It is assumed that you are a skilled Erlang programmer, familiar with concepts such as Erlang data types, processes, messages, and error handling.

To illustrate the interoperability principles, C programs running in a UNIX environment have been used. It is assumed that you have enough knowledge to apply these principles to the relevant programming languages and platforms.

#### Note

For readability, the example code is kept as simple as possible. For example, it does not include error handling, which might be vital in a real-life system.

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