static void Main(string[] args)
{
Console.WriteLine("Which type of shape do you want to create :（rectangle,square,triangle,circle）");
string shapeType = Convert.ToString(Console.ReadLine());
Shape shape = ShapeFactory.GetShape(shapeType);
Console.WriteLine("The area of the " + shapeType + " is " + shape.getArea());
}
static void Main()
{
Shape shape;
//圆形
Console.WriteLine("创建半径为5的圆形");
shape = ShapeFactory.GetShape("circle", 5);
shape.ShowArea();
//矩形
Console.WriteLine("创建边长为2, 4的矩形");
shape = ShapeFactory.GetShape("rect", 2, 4);
shape.ShowArea();
//三角形
Console.WriteLine("创建底3, 高4的三角形");
shape = ShapeFactory.GetShape("triangle", 3, 4);
shape.ShowArea();
//正方形
Console.WriteLine("创建边长为1的正方形");
shape = ShapeFactory.GetShape("square", 1);
shape.ShowArea();
Console.ReadKey();
}
static void Main(string[] args)
{
Shape shape_1;
shape_1 = ShapeFactory.GetShape("TRIANGLE");
shape_1.Draw();
Console.WriteLine("The area is : " + shape_1.Area);
Shape shape_2;
shape_2 = ShapeFactory.GetShape("CIRCLE");
shape_2.Draw();
Console.WriteLine("The area is : " + shape_2.Area);
Shape shape_3;
shape_3 = ShapeFactory.GetShape("SQUARE");
shape_3.Draw();
Console.WriteLine("The area is : " + shape_3.Area);
Shape shape_4;
shape_4 = ShapeFactory.GetShape("RECTANGLE");
shape_4.Draw();
Console.WriteLine("The area is : " + shape_4.Area);
}