C# - 泛型和继承问题

public class Stack<T>
{
    private T[] _elements;
    private int _count;

    public Stack(int capacity)
    {
        _elements = new T[capacity];
        _count = 0;
    }

    public void Push(T item)
    {
        _elements[_count++] = item;
    }

    public T Pop()
    {
        return _elements[--_count];
    }
}

var intStack = new Stack<int>(10);
var stringStack = new Stack<string>(10);

public class Animal
{
    public string Name { get; set; }

    public void MakeSound()
    {
        // Default implementation
    }
}

public class Dog : Animal
{
    public void Bark()
    {
        // Dog-specific implementation
    }

    public override void MakeSound()
    {
        // Dog-specific implementation
    }
}

public class DataAccessLayer
{
    public virtual void Connect()
    {
        // Default implementation
    }
}

public class Repository<T> : DataAccessLayer
{
    public void Save(T entity)
    {
        // Generic implementation
    }

    public override void Connect()
    {
        // Generic implementation
    }
}