//const double PI = 3.14159;
static void Main(string[] args)
{
try
{
Shape obj = ShapeFactory.createShape("triangle");
//obj = ShapeFactory.createShape("circle");
//obj = ShapeFactory.createShape("rectangle");
//obj = ShapeFactory.createShape("square");
obj.create();
Console.WriteLine("The area is " + obj.Area());
}
catch (System.IndexOutOfRangeException e)
{
Console.WriteLine(e.Message);
}
}
static void Main(string[] args)
{
int flag;
Shape myShape;
Console.WriteLine("---------------------------");
Console.WriteLine("1.Triangle 2.Circle");
Console.WriteLine("3.Square 4.Rectangle");
Console.WriteLine("---------------------------");
Console.Write("请选择一种图形:");
flag = Int32.Parse(Console.ReadLine());
while (flag < 1 || flag > 4)
{
Console.Write("请重新输入:");
flag = Int32.Parse(Console.ReadLine());
}
switch (flag)
{
case 1:
myShape = ShapeFactory.createShape("Triangle");
myShape.showArea();
break;
case 2:
myShape = ShapeFactory.createShape("Circle");
myShape.showArea();
break;
case 3:
myShape = ShapeFactory.createShape("Square");
myShape.showArea();
break;
case 4:
myShape = ShapeFactory.createShape("Rectangle");
myShape.showArea();
break;
}
}