oh....it's my code

int main(void)
{
     double number,root,temp,answer[65536];
     int i=0;
     while(EOF!=scanf("%lf",&number))
     {
         if(number==0) root=0;
         else
         {
             root=1;
             temp=(root+number/root)/2;
             while(root!=temp)
             {
                 root=temp;
                 temp=(root+number/root)/2;
             }
         }
         answer[i++]=root;
     }
     for(i-=1;i>=0;i--) printf("%.4lf\n",answer[i]);
     return 0;
 }