C# 中的抽象构造函数[重复]

C#中的抽象构造函数

csharp
abstract class Animal
{
    protected string name;
    protected Animal(string name)
    {
        this.name = name;
    }
    public abstract void Sound();
}
class Dog : Animal
{
    public Dog(string name) : base(name)
    {
    }
    public override void Sound()
    {
        Console.WriteLine("The dog {0} is barking.", name);
    }
}
class Program
{
    static void Main(string[] args)
    {
        Dog dog = new Dog("Tom");
        dog.Sound();
    }
}