###### (This is the legacy documentation for SDL2, the previous stable version; [SDL3](https://wiki.libsdl.org/SDL3/) is the current stable version.)
# SDL_GameControllerGetSerial

Get the serial number of an opened controller, if available.

## Header File

Defined in [SDL_gamecontroller.h](https://github.com/libsdl-org/SDL/blob/SDL2/include/SDL_gamecontroller.h)

## Syntax

```c
const char * SDL_GameControllerGetSerial(SDL_GameController *gamecontroller);
```

## Function Parameters

|                                            |                    |                                      |
| ------------------------------------------ | ------------------ | ------------------------------------ |
| [SDL_GameController](SDL_GameController) * | **gamecontroller** | the game controller object to query. |

## Return Value

(const char *) Return the serial number, or NULL if unavailable.

## Remarks

Returns the serial number of the controller, or NULL if it is not
available.

## Version

This function is available since SDL 2.0.14.

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[CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction), [CategoryGameController](CategoryGameController)