104
40.000
100000
55537.778
10000000
5555537.778
1000000000
5.55555537778E8

以上是我的測資

小的答案都正確，到大的就錯了??  why?

import java.util.Scanner;
public class d051 {
   public static void main(String[]args){
       Scanner input=new Scanner(System.in);

       while(input.hasNext()){
           double f=input.nextDouble();
           long c=(long)((f-32)*5/9*10000);
           long ans=c%10>4? (c-c%10)+10:(c-c%10);
           double ans2=(double)ans/10000;
           long tmp=0;
           String s=ans2+"";
           for(int i=0;i<s.length();i++){
               if(s.charAt(i)=='.'){
                   tmp=i;
               }
           }
           System.out.println(s.length()-1-tmp==1? ans2+"00":ans2);
       }
   }
}