fun(char *w,int n) { char t,*s1,*s2; s1=w; s2=w+n-1; while(s1

fun(char *w,int n) { char t,*s1,*s2; s1=w; s2=w+n-1; while(s1
fun(char *w,int n) { char t,*s1,*s2; s1=w; s2=w+n-1; while(s1

fun(char *w,int n) { char t,*s1,*s2; s1=w; s2=w+n-1; while(s1
按照你的代码输出：1711717
如果想实现字符串倒转1234567→7654321,可以修改一下fun函数,如下：
void fun(char *w,int n)
{
char t,*s1,*s2;
s1=w; s2=w+n-1;
while(s1