为什么不能递增数组? [英] Why can't I increment an array?

问题描述

char a[] = "hello";

我的理解是，a的行为就像一个指向字符串的常量指针.我知道写a++是行不通的，但是为什么呢?

My understanding is that a acts like a constant pointer to a string. I know writing a++ won't work, but why?

推荐答案

否，增加数组是不正确的.尽管数组可以自由转换为指针，但它们不是指针.因此，写入a++会触发错误.

No, it's not OK to increment an array. Although arrays are freely convertible to pointers, they are not pointers. Therefore, writing a++ will trigger an error.

但是，写作

char *p = a;
p++;

很好，因为p是一个指针，其值等于a初始元素的位置.

is fine, becuase p is a pointer, with value equal to the location of a's initial element.

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