如何在C#中迭代内置类型？

int[] numbers = { 1, 2, 3, 4, 5 };

for (int i = 0; i< numbers.Length; i++)
{
    Console.WriteLine(numbers[i]);
}

float[] floats = { 1.0f, 2.0f, 3.0f, 4.0f, 5.0f };

foreach (float f in floats)
{
    Console.WriteLine(f);
}

double[] doubles = { 1.0, 2.0, 3.0, 4.0, 5.0 };

for (int i = 0; i< doubles.Length; i++)
{
    Console.WriteLine(doubles[i]);
}