为什么索引在“C"中从零开始? [英] Why does the indexing start with zero in 'C'?

问题描述

为什么数组中的索引在 C 中从零开始而不是从 1?

Why does the indexing in an array start with zero in C and not with 1?

推荐答案

在C语言中，数组的名字本质上是一个指针[见注释]，一个内存位置的引用，因此表达式 array[n] 指的是远离起始元素的内存位置 n 个元素.这意味着索引被用作偏移量.数组的第一个元素正好包含在数组引用的内存位置(0 个元素之外)，所以它应该表示为 array[0].

In C, the name of an array is essentially a pointer [but see the comments], a reference to a memory location, and so the expression array[n] refers to a memory location n elements away from the starting element. This means that the index is used as an offset. The first element of the array is exactly contained in the memory location that array refers (0 elements away), so it should be denoted as array[0].

更多信息:

http://developeronline.blogspot.com/2008/04/why-array-index-should-start-from-0.html

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