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  1. #include <stdlib.h>
  2. #include <stdio.h>
  3. #include <string.h>
  4. #include <math.h>
  5.  
  6. double sum(double x, double eps)
  7. {
  8.     double s = x, t = x;
  9.     x *= x;
  10.     for(int n = 1; fabs(t) > eps; ++n)
  11.     {
  12.         s += t *= -x/(2.*n*(2.*n+1));
  13.     }
  14.     return s;
  15. }
  16.  
  17. int main(int argc, const char * argv[])
  18. {
  19.     for(double x = 0.0; x < 1.0; x += 0.1)
  20.     {
  21.         printf("%3.1lf  %12.9lf   %12.9lf\n",
  22.                x,sin(x),sum(x,1e-7));
  23.     }
  24. }
  25.  
Success #stdin #stdout 0s 9424KB
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stdin
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Standard input is empty
stdout
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0.0   0.000000000    0.000000000
0.1   0.099833417    0.099833417
0.2   0.198669331    0.198669331
0.3   0.295520207    0.295520207
0.4   0.389418342    0.389418342
0.5   0.479425539    0.479425539
0.6   0.564642473    0.564642473
0.7   0.644217687    0.644217687
0.8   0.717356091    0.717356091
0.9   0.783326910    0.783326910
1.0   0.841470985    0.841470985
https://ideone.com/tUborj
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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