/* MIDPOINT CIRCLE DRAWING* / #include<stdio.h> #include<graphics.h> #include<math.h> #include<dos.h> #include<conio.h> void main() { char pattern[8] = {0x00, 0x70, 0x20, 0x27, 0x25, 0x27, 0x04, 0x04}; float p; int i,gd,gm,x,y; int r; detectgraph(&gd,&gm); initgraph(&gd,&gm,"f:\\tc\\bin\\bgi"); printf("enter the radius of the circle"); scanf("%d",&r); x=0; y=r; p=(3)-r; //setbkcolor(7) ; line(0, 0, 30, 10); setcbrk(5); do { for(i=0;i<5;i++) { putpixel(200+x,200+y,10); putpixel(200+y,200+x,5); putpixel(200+x,200-y,8); putpixel(200+y,200-x,5); putpixel(200-x,200-y,9); putpixel(200-x,200+y,5); putpixel(200-y,200+x,1); putpixel(200-y,200-x,5); setfillpattern(pattern,getmaxcolor()); if(p<0) { x=x+1; y=y; p=p+2*x+2; } else { x=x+1; y=y-1; p=p+2*(x-y)+1 ; } delay(100); } } while(x<y); getch(); closegraph(); }