func print(c: u8) { foreign func putchar(c: i32) -> i32 putchar(c as i32) } func mandelbrot() { let width = 120 let height = 40 mut y = 0 while y < height { mut x = 0 while x < width { let cx = (x as f32 + 0.5) / (width as f32) * 2.5 - 2.0 let cy = (y as f32 + 0.5) / (height as f32) * 2.0 - 1.0 mut tx = 0.0 mut ty = 0.0 mut i = 0 while i < 100 && (tx * tx + ty * ty < 4.0) { let newx = tx * tx - ty * ty + cx ty = 2.0 * tx * ty + cy tx = newx i = i + 1 } if i == 100 { print('X') } else { print(' ') } x = x + 1 } y = y + 1 print('\n') } } mandelbrot()