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  1. #include <iostream>
  2. #include <cmath>
  3. using namespace std;
  4.  
  5. int main(){
  6. 	double exponent = M_E, a = sqrt(2)/exponent, sum = 0, E;
  7. 	cin >> E; 
  8. 	for (int i = 1; (a = sqrt(i+1)/(i * exponent)) >= E; i++){
  9. 		exponent *= M_E;
  10. 		sum += a;
  11. 	}
  12. 	cout << sum;
  13. 	return 0;
  14. }
Success #stdin #stdout 0s 3416KB
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stdin
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0.00001
stdout
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0.685841
https://ideone.com/PpoKjp
Mloop19 (сумма рядаа)
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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