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  1. #include <iostream>
  2. #include <math.h>
  3. using namespace std;
  4.  
  5. int main() {
  6. 	long double d = 0;
  7. 	for (double n = 2; n < 100000000; n++) {
  8. 		d += 1/pow(n, 2);
  9. 	}
  10. 	std::cout << d << endl;
  11. 	return 0;
  12. }
Success #stdin #stdout 0.99s 3460KB
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Standard input is empty
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0.644934
https://ideone.com/7rdGeF
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
secret

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