Конструктор класса с необязательными аргументами(для .Net v 4.0 и выше)

class MyClass
{
  public int speed;
  public string name;
  public MyClass(int speed = 0, string name = "")
   { 
     if (speed > 10)
          speed = 10;
     this.speed = speed;
     this.name = name;
   }
  public void SetDriverName(string name) { this.name = name; }
  public void PopAWheely() { Console.WriteLine("Yeeeeeeeeeee Haaaaaaaaaaeeww!"); }
 
}
 
//Пример:
class Programm
{
  static void Main(string[] args)
  {
    MakeSomeBikes();
    Console.ReadLine();
  }
  
  static void MakeSomeBikes()
  {
    //name = "", speed = 0
    MyClass mc1 = new MyClass();
    Console.WriteLine("Name = {0}, Speed = {1}", mc1.Name, mc1.Speed);
 
    //name = "Tiny", speed = 0
    MyClass mc2 = new MyClass(name: "Tiny");
    Console.WriteLine("Name = {0}, Speed = {1}", mc2.Name, mc2.Speed);
 
    //name = "", speed = 7
    MyClass mc3 = new MyClass(7);
    Console.WriteLine("Name = {0}, Speed = {1}", mc3.Name, mc3.Speed);
  }
}