C# (CSharp) Visitor_Pattern UseCircular Exemples

Exemple #1

        public UseGraphical()
        {
            UseElement element  = new UseRectangle(10, 5);
            UseElement element1 = new UseCircular(5);

            elements.Add(element);
            elements.Add(element1);
        }

Exemple #2

 public void Visit(UseCircular useCircular)
 {
     useCircular.CalculatedArea();
     Console.WriteLine($"圆形的半径是：{useCircular._r}");
     Console.WriteLine($"圆形的周长是是：{2*Math.PI*useCircular._r}");
 }