static void Main(string[] args)
{
List <Polygon> polygonsList = new List <Polygon>();
Polygon polygon1 = new Polygon();
Polygon rectangle1 = new Rectangle(); //rectangle that has been cast as a polygon
Polygon triangle1 = new Triangle(); //triangle that has been cast as a polygon
//shapes added to list of polygons
polygonsList.Add(polygon1);
polygonsList.Add(rectangle1);
polygonsList.Add(triangle1);
//draw method called for each shape in the list
foreach (Polygon p in polygonsList)
{
Console.Write(p.GetType() + ": ");
p.Draw();
}
//draw method called on a triangle that is just
//a triangle - it hasn't been cast as a polygon
Triangle triangle2 = new Triangle();
Console.Write(triangle2.GetType() + ": ");
triangle2.Draw();
Console.ReadLine();
}
private static void Main(string[] args)
{
IShape circle = new Circle();
IShape triangle = new Triangle();
circle.Draw();
circle.Erase();
triangle.Draw();
triangle.Erase();
Console.ReadKey();
}
public static void Main(String[] args)
{
int ui;
Shape s = null;
do
{
A.WriteLine("Menu\n");
A.WriteLine("1.Rectangle\n" + "2.Circle\n" + "3.Square\n" + "4.Triangle\n");
A.WriteLine("Enter the inpute\n");
ui = Convert.ToInt32(A.ReadLine());
switch (ui)
{
case 1:
s = new Rectangle();
break;
case 2:
s = new Circle();
break;
case 3:
s = new Square();
break;
case 4:
s = new Triangle();
break;
default:
A.WriteLine("Invalid input");
Environment.Exit(0);
break;
}
s.Draw();
} while (ui >= 1 && ui <= 5);
/* var drawobjects = new List<Shape>
* {
* new Triangle(),
* new Rectangle(),
* new Circle(),
* new Square()
* };
* foreach(Shape s in drawobjects)
* {
* s.Draw();
* }*/
}