为什么执行的时候没反应

#include<graphics.h>
#include<conio.h>
main()
{
    int gdriver,gmode;
    gdriver=DETECT;
    initgraph(&gdriver,&gmode,"D:\TC201E\BGI");
    setbkcolor(BLUE);
    setcolor(WHITE);
    circle(300,200,50);
    delay(6000);
    getch();
    closegraph();
}