static void Main(string[] args)
{
Console.WriteLine("请输入：\"圆\"、\"正方形\"、\"三角形\"或者\"长方形\"。");
string type = Console.ReadLine();
Graph shape = GraphFactory.createGraph(type);
Console.WriteLine(shape.GraphShow());
}
static void Main(string[] args)
{
Console.WriteLine("请输入你所要创建图形的序号：（1.三角形 2.圆形 3.正方形 4.长方形）");
int n;
n = Convert.ToInt32(Console.ReadLine());
Graph shape;
shape = GraphFactory.createGraph(n);
shape.Init();
shape.Getarea();
Console.ReadKey();
}
static public Graph CreateYourGraph()
{
Console.Write("请输入你要创建的图形名字：");
Graph aGraph = GraphFactory.CreateGraph(Console.ReadLine());
if (aGraph == null)
{
CreateYourGraph();
}
else
{
aGraph.InputDate();
aGraph.ShowArea();
}
return(aGraph);
}