fork download
copy 
  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. int main()
  6. {
  7.     int n;
  8.     cin >> n;
  9.     float s = 0;
  10.     int i = 1;
  11.     while(i <= 2*n+1)
  12.     {
  13.         s += (float) i/(i+1);
  14.         i += 2;
  15.     }
  16.     cout << s;
  17. }
  18.  
Success #stdin #stdout 0s 5292KB
comments (?)
stdin
copy 
5
stdout
copy 
4.775
https://ideone.com/dTUYrl
B1: tính S(n) = ½ ¾ … (2n 1)/(2n 2) (n
language:
C++14 (gcc 8.3)
created:
22 hours ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!