static void Main(string[] args)
{
double allArea = 0;
for (int i = 0; i < 10; i++)
{
Console.Write("第" + (i + 1) + "个图形：");
Shape sp = ShapeFactory.generateRandomShape(i);
allArea += sp.calcuArea();
Console.WriteLine("this area=" + sp.calcuArea());
Console.WriteLine("allArea=" + allArea);
}
Console.WriteLine("十个图形总面积（含不合法图形）为：" + allArea);
}
