num_joysticks - Global variable saying how many joysticks there are. Allegro game programming library.

       Global  variable  containing the number of active joystick devices. The current drivers support a maximum
       of eight controllers.

       num_joysticks - Global variable saying how many joysticks there are. Allegro game programming library.

install_joystick(3alleg4), joy(3alleg4), exjoy(3alleg4)

Allegro                                           version 4.4.3                           num_joysticks(3alleg4)

#include<allegro.h>externintnum_joysticks;