man num_joysticks () - Global variable saying how many joysticks there are. Allegro game programming library.
NAME
num_joysticks - Global variable saying how many joysticks there are. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
extern int num_joysticks;
DESCRIPTION
Global variable containing the number of active joystick devices. The current drivers support a maximum of four controllers.