#include <stdio.h>
    #include <string.h>

    void reverse_str(char * ch);

    int main(void)
    {
       char c[] = "Can you reverse me?";                  //当这里把char c[]改成char *s的时候结果就出错，是什么原因啊

       printf("original string c: %s\n", c);
       reverse_str(c);
       printf("reversed string after calling reverse_str: %s\n", c);
       return 0;
    }

    void reverse_str(char *ch)
    {
       int len;
       int i;
       char temp;
       len = strlen(ch)-1;
       for(i = 0; i < len-i; i++)
       {
             temp = ch[i];
             ch[i] = ch[len-i];
             ch[len-i] = temp;
       }
       ch[len+1] = 0;
    }

能说的仔细点吗，不理解啊