[Stinged]

https://sampwiki.blast.hk/wiki/Control_Structures#if
Read how if statements work.
You can't do something like this.

Код:

if(i != -1);
}

Also

Код:

#define NPCInfo
#define GetNPCID

Just because it says "Undefined symbol", it doesn't mean you should #define them.
If you copied the script from somewhere, you have to copy the functions with it.