谁能解释一下它的打印输出是 "ink"

Question

我是 C 中指针的新手。我知道基本概念。在下面的代码中，为什么要打印“墨水”作为输出？

#include<stdio.h>


main()
{
    static char *s[]={"black","white","pink","violet"};

    char **ptr[]={s+3,s+2,s+1,s},***p;

    p=ptr;

    ++p;

    printf("%s",**p+1);
}

谢谢

Answer 1

让我们追踪一下:

ptr = {pointer to "violet", pointer to "pink", pointer to "white", pointer to "black"}

p = ptr --> *p = pointer to "violet"

++p -->     *p = pointer to "pink"

这意味着:

*p = {'p','i','n','k','\0'}

这意味着:

**p = 'p'
**p + 1 = 'i'

所以 **p + 1 是指向这个字符串的指针:{'i', 'n', 'k', '\0'}，它就是“墨水”。