graphics问题

想问下char savepattern[8];是什么意思？好像程序中没有用到。。隐含什么意义?
代码:
#include <graphics.h>
main()
{
   int graphdriver=VGA,graphmode=VGAHI;
   struct fillsettingstype save;
   char savepattern[8];
   int d[]={420,20,330,45,330,145,420,120,510,145,510,55,420,20};
   initgraph(&graphdriver,&graphmode,"");
   getfillsettings(&save);
   setfillstyle(3,BLUE);
   bar3d(100,50,150,120,30,1);
   setfillstyle(HATCH_FILL,RED);
   bar3d(200,50,250,120,30,0);
   setfillstyle(1,GREEN);
   sector(200,300,0,250,100,40);
   setfillstyle(1,LIGHTRED);
   fillellipse(420,300,100,40);
   fillellipse(420,300,100,40);
   setfillstyle(1,5);
   fillpoly(7,d);
   getch();
   setfillstyle(save.pattern,save.color);
   closegraph();
}