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  1. #include <iostream>
  2. #include <iomanip>
  3. #include <cmath>
  4.  
  5. using namespace std;
  6.  
  7. double sin_cos(double x, unsigned int n)
  8. {
  9.     double term = 1.0;
  10.     double sum  = term;
  11.     for(unsigned int k = 1; k < n; ++k)
  12.         sum += (term *= x/k)*(k/2%2 ? -1 : 1);
  13.     return sum;
  14. }
  15.  
  16. int main()
  17. {
  18.     for(double x = 0; x < 1; x+= 0.1)
  19.         cout << setw(10) << x << setw(10) << sin_cos(x,6)
  20.              << setw(10) << sin(x)+cos(x) << endl;
  21. }
  22.  
Success #stdin #stdout 0s 15232KB
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stdin
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Standard input is empty
stdout
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         0         1         1
       0.1   1.09484   1.09484
       0.2   1.17874   1.17874
       0.3   1.25086   1.25086
       0.4   1.31049   1.31048
       0.5   1.35703   1.35701
       0.6   1.39005   1.38998
       0.7   1.40924   1.40906
       0.8   1.41446   1.41406
       0.9   1.40576   1.40494
         1   1.38333   1.38177
https://ideone.com/wN9zoN
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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