ROTATING LINE

/**************************************************************************/

#include<math.h>

#include<stdio.h>

#include<conio.h>

#include<graphics.h>

void drawRevolvingLine(int,int,int);

int main()

{

                int gdriver=DETECT,gmode;

                int x,y,r;

                x=200;

                y=200;

                r=100;

                initgraph(&gdriver,&gmode,"");

                drawRevolvingLine(x,y,r);

                getch();

                return 0;

}

void drawRevolvingLine(int x,int y,int r)

{

                int i;

                int nx,ny;

                double rad;

                int cnx,cny;

                for(i=0;i<=360 && !kbhit();i++)

                {

                                rad=i*(180.0)/3.14;

                                nx=(int)(x+r*cos(rad));

                                ny=(int)(y+r*sin(rad));

                                {cnx=(int)(nx+r*cos(rad));

                                cny=(int)(ny+r*sin(rad));

                                line(nx,ny,cnx,cny);

                                delay(100);

                                cleardevice();

                                }

                                cleardevice();

                }

}

/****************************************************************************/