fork download
copy 
  1. #include <iostream>
  2. #include <cmath>
  3. using namespace std;
  4.  
  5. int main() {
  6. 	double E=0.000001, a = 2, sum = 2;
  7. 	int l;
  8. 	//cin >> E;
  9. 	for(int i=1; abs(a*=2.0/(i+1))>=E;i++){
  10. 		sum+=a;
  11. 		l=i;
  12. 	}
  13. 	cout << sum << " " << l;
  14. 	return 0;
  15. }
Success #stdin #stdout 0s 3412KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
6.38906 12
https://ideone.com/HHJSAr
mloops 18
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
secret

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!