回文2输入字符型进行判断

int huiwen(char *s)
{
     char *p = s;

     while(*p) 
	   p++;

    p--;

    while(s<p)

   {

    if(*s != *p) 
	return 0;

    s++;

    p--;

   }

  return 1;

}

int main()

{

char s[100];
gets(s);

printf("%d",huiwen(s));


}