pieslice() in C.

[amandeepsinghvi]

Hello Friends,
I was just writing a program in C. In this program i was trying to give the rotation affect like the for pie-slices are moving.

#include<stdio.h>
#include<conio.h>
#include<graphics.h>
#include<dos.h>
int main(void)
{
int gd=DETECT,gm,i=1,count=1;
initgraph(&gd,&gm,"d:\\tc\\bgi");
do{
i=count%2==0?2:1;
setfillstyle(1,i);
delay(500);
pieslice(319,239,20,60,100);    //A1

i=count%2==0?1:2;
setfillstyle(1,i);
delay(500);
pieslice(319,239,120,160,100);     //B1

i=count%2==0?2:1;
setfillstyle(1,i);
delay(500);
pieslice(319,239,200,240,100);        //A2

i=count%2==0?1:2;
setfillstyle(1,i);
delay(500);
pieslice(319,239,300,340,100);            //B2
count++;
}while(count<20);
getch();
cleardevice();
closegraph();
return 0;
}

I want that the effect must be like that its rotating (by shifting one backgraound to other).. and consecutive pie-slices should have differnt colors. but unfortunately it doesnt happen. please help
I am performing this program on Turbo C++, on windows XP SP3

thanks
Amandeep Singh