# C Interface

The C interface implements the [Devices](devices.md) and their operations. The
interface is split up into different header files.

* [ftalloc.h](c_allocators.md): Defines functions for allocatiting TXT and device instances.
* [ftop.h](c_operations.md): Defines functions to operate on the TXT and device instances.
* [ftslave.h](c_slave.md): Defines functions for allocating TXT slave instances and for querying slave-related information.
* [fttypes.h](c_fttypes.md): Defines useful values and types.

The entire interface is inluded  by

```C
#include <ft/ft.h>
```