c#数组定义与遍历

int arr = new int[];

int[] arr = new int[5];

int[] arr = new int[];

int arr = new int[5];

for (int i = 0; i < arr.Length(); i++)

for (int i = 0; i < arr.Length; i++)

for (int i = 0; i < arr.Size; i++)

for (int i = 0; i < arr.Count; i++)

arr(3)

arr(2)

arr[3]

arr[2]