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  1. #include <iostream>
  2. #include <cmath>
  3. using namespace std;
  4.  
  5. double ch(double x, double e)
  6. {
  7. 	double result = 1;
  8. 	double member = 1;
  9. 	for (int i = 1; abs(member) >= e; i++)
  10. 	{
  11. 		member *= x * x;
  12. 		member /= 2*i * (2*i - 1);
  13. 		result += member;
  14. 	}
  15. 	return result;
  16. }
  17.  
  18. int main() 
  19. { 
  20. 	double x, e;
  21. 	cin >> x >> e;
  22. 	cout << ch(x, e);
  23. 	return 0;
  24. }
Success #stdin #stdout 0s 3464KB
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0.11 0.001
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1.00606
https://ideone.com/Pxwkpk
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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