创建一个point,用随机函数定义5对坐标（x,y）并储存在一个该类的数组中，安于原点的距离从远到近输出各点的坐标和原点的距离-Create a point, with random function definitions 5 on coordinates (x, y) and stored in a such an array, the distance from the origin of the content with far to nearly output of different points of origin coordinate and distance