为什么在c#中将对象初始化为0作为默认值

public class Example
{
    public int Number; // 默认值为0
    public float Price; // 默认值为0.0f
    public bool IsActive; // 默认值为false

    public void ResetValues()
    {
        Number = 0; // 显式设置为0
        Price = 0.0f; // 显式设置为0.0f
        IsActive = false; // 显式设置为false
    }
}

public class Program
{
    public static void Main()
    {
        Example example = new Example();
        Console.WriteLine(example.Number); // 输出: 0
        Console.WriteLine(example.Price); // 输出: 0
        Console.WriteLine(example.IsActive); // 输出: False

        example.ResetValues();
        Console.WriteLine(example.Number); // 输出: 0
        Console.WriteLine(example.Price); // 输出: 0
        Console.WriteLine(example.IsActive); // 输出: False
    }
}