#include <stdio.h>
#include <stdlib.h>

int main(void)
{
    //char s[6] = {'h','e','l','o','\0'};
    char *s = "hello";       
    int i=0,m;
    char temp;

    int n = strlen(s);
    //s[n] = '\0';
    while (i<(n/2))
    {
         temp = *(s+i);       //uses the null character as the temporary storage.
         *(s+i) = *(s+n-i-1);
         *(s+n-i-1) = temp;
         i++;
    }
    printf("rev string = %s\n",s);
    system("PAUSE");
    return 0;
}

在编译时,错误是分段错误(访问冲突).请告诉我们两个定义有什么区别：

char s[6] = {'h','\0'};
char *s = "hello";