Controls whether or not the compiler should expect function prototypes.
#pragma require_prototypes on | off | reset
This pragma only works for non-static functions.
If you enable this pragma, the compiler generates an error if you use a function that does not have a prototype. This pragma helps you prevent errors that happen when you use a function before you define it or refer to it.
This pragma corresponds to the Require Function Prototypes setting in the Language panel. To check this setting, use __option (require_prototypes), described in Checking Pragma Settings. By default, this pragma is disabled.