指数数组的边界之外？ [英] Index was outside the bounds of the array?

问题描述

static void Main(string[] args)
       {
          string[] arr = new string[4];
          arr[0] = "Hemanth";
          arr[1] = "Anil";
          arr[2] = "Raja";
          arr[3] = "Somu";
          for (int i = 0; i <= arr.Length; i++)
          {
              string element = arr[i];
              Console.WriteLine(element);
          }
           Console.ReadLine();
       }

这是我要执行的代码，当我执行时上面的程序正在执行但是string element = arr [i];在这一行我得到索引超出数组的界限为什么？这是什么意思？

提前感谢

this is the code that i want to execute and and when i execute the above program it's getting executed but string element = arr[i]; in this line iam getting the index was outside the bounds of array why? what does it mean?
thanks in advance

推荐答案

这意味着您正在尝试从超出数组边界的索引处获取数组中的元素。在这种情况下，最大索引是 3 （C＃的数组索引是从零开始的，也就是说，第一个元素的索引为0），但因为你的条件是 i< = arr.Length ， i 在循环的最后一次迭代时将为4，因为数组长度为4.将条件更改为 i< arr.Length 然后你的循环就可以了。

It means that you are trying to get an element from the array at an index that exceeds the array's bounds. In this case, the maximum index is 3 (the array indices of C# are zero-based, that is, the first element has index 0), but because your condition is i <= arr.Length, i will be 4 at the last iteration of the loop, because the array length is 4. Change the condition to i < arr.Length and then your loop will work fine.

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