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  1. #include <iostream>
  2. #include <cmath>
  3. using namespace std;
  4.  
  5. int main() 
  6. {
  7.     int e=1, n;
  8.     double x, t, o=0;
  9.  
  10.     cin >> n >> x;
  11.  
  12.     for (int j=1; j<(n+1); j++)
  13.     {
  14. 		t=sin(j*x);
  15. 		e*=2;
  16. 		o+=t/e;
  17.     }
  18.  
  19.     cout << fixed << o;
  20.  
  21.     return 0;
  22. }
Success #stdin #stdout 0s 4348KB
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10 0.523598
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0.651170
https://ideone.com/77OpOZ
D2574
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
public

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