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// LAB 3 //input radius = 100 and x,y = 100, 150 or above for full circle #include<stdio.h> #include<graphics.h> void drawcircle(int x0, int y0, int radius) { int x = radius; int y = 0; int err = 0; while (x >= y) { putpixel(x0 + x, y0 + y, 7); putpixel(x0 + y, y0 + x, 7); putpixel(x0 - y, y0 + x, 7); putpixel(x0 - x, y0 + y, 7); putpixel(x0 - x, y0 - y, 7); putpixel(x0 - y, y0 - x, 7); putpixel(x0 + y, y0 - x, 7); putpixel(x0 + x, y0 - y, 7); if (err <= 0) { y += 1; err += 2*y + 1; } if (err > 0) { x -= 1; err -= 2*x + 1; } } } int main() { int gdriver=DETECT, gmode, error, x, y, r; initgraph(&gdriver, &gmode, "c:\\turboc3\\bgi"); printf("Enter radius of circle: "); scanf("%d", &r); printf("Enter co-ordinates of center(x and y): "); scanf("%d%d", &x, &y); drawcircle(x, y, r); getch(); return 0; }
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