C# 中对象不同实例的数组的优雅平均

在C#中优雅处理不同实例对象数组的平均值计算

csharp
class Animal
{
    public string Name { get; set; }
    public int Age { get; set; }
}
class Dog : Animal
{
    public string Breed { get; set; }
}
class Cat : Animal
{
    public string Color { get; set; }
}
class Bird : Animal
{
    public bool CanFly { get; set; }
}
Animal[] animals = new Animal[]
{
    new Dog { Name = "Buddy", Age = 3, Breed = "Labrador" },
    new Cat { Name = "Whiskers", Age = 2, Color = "Gray" },
    new Bird { Name = "Tweetie", Age = 1, CanFly = true }
};

csharp
using System;
using System.Linq;
class Program
{
    static void Main()
    {
        double averageAge = CalculateAverageAge(animals);
        Console.WriteLine($"平均年龄: {averageAge}");
    }
    static double CalculateAverageAge(Animal[] animalArray)
    {
        if (animalArray.Length == 0)
            return 0;
        double totalAge = animalArray.OfType().Select(a => a.Age).Sum();
        double averageAge = totalAge / animalArray.Length;
        return averageAge;
    }
}