HDOJ2011 ( 多项式求和 )【水题】

Problem : 2011 ( 多项式求和 )     Judge Status : Accepted
RunId : 6000123    Language : C    Author : qq1203456195
Code Render Status : Rendered By HDOJ C Code Render Version 0.01 Beta

 1 #include <stdio.h>
 2 int main()
 3 {
 4     int n,i;
 5     double arr[1001],t;
 6     arr[1]=1;
 7     for (i=2;i<1000;i++)
 8     {
 9         t=(i%2==0)?-1.0/i:1.0/i;
10         arr[i]=arr[i-1]+t;
11     }
12     scanf("%d",&n);
13     while(n--)
14     {
15         scanf("%d",&i);
16         printf("%.2lf\n",arr[i]);
17     }
18     return 0;
19 }