static void Main(string[] args) { MyClass myClass = new MyClass("Lox", "program", 22); myClass.Look(); myClass.SayMethod(); IMyInterfase myInterfase = myClass as IMyInterfase; myInterfase.PrintHello(); IMyInterfase2 myInterfase2 = myClass as IMyInterfase2; myInterfase2.PrintHello(); string p = "Java"; p.extension(); Extensions.extension("lol"); string str = "PHP"; Console.WriteLine(str.AddStrings("the best", "love", "XZ")); string str1 = "I love ".AddStrings("PHP"); Console.WriteLine(str1); Console.WriteLine(myClass); Console.ReadKey(); }