computer graphics using c++

String art is done by tying strings to equally spaced pegs laid out on a grid. We can imitate this by drawing coloured lines between points on the display as shown below. This string art is created by drawing lines in succession. The first line connects a point on the left edge with a point on the bottom edge. The second line connects a point on the bottom edge with a point on the right edge. Coordinates on the left edge decrease by the same ? *step* in each iteration. Points on the ? bottom and right edges increase by the same ? *step* amount. The *step* should be selected from a menu of ? choices by pressing the left button in the window. You may assume the window is square. Each line should be drawn in a randomly selected colour. Course Profile ## Deliverables pictures? are? not? displaying? in? the? above? ? files so? ? will? attach? them