os_multitasking - Indicates if the OS is multitasking. Allegro game programming library.

       Set  by allegro_init() to either TRUE or FALSE depending on whether your Operating System is multitasking
       or not.

       os_multitasking - Indicates if the OS is multitasking. Allegro game programming library.

os_type(3alleg4), os_version(3alleg4)

Allegro                                           version 4.4.3                         os_multitasking(3alleg4)

#include<allegro.h>externintos_multitasking;