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  1. #include <iostream>
  2. #include <math.h>
  3. using namespace std;
  4.  
  5. int main() {
  6. 	double curr = sqrt(2.0)/2; //Перменная для сравнения
  7. 	double mul = 1;   //Произведение
  8. 	double e = 1.0e-6;  //Точность
  9. 	int count = 1; //Счетчик
  10. 	for(;fabs(mul - curr) > e;count++){
  11. 		mul *= (1. + (count % 2 ? (-1) : 1)/(2.*count + 1));
  12. 	}
  13. 	printf("%d",count); 
  14. 	return 0;
  15. }
Success #stdin #stdout 0s 3340KB
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https://ideone.com/yfByx7
Ю3.17
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
secret

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