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  1. #include <iostream>
  2.  
  3.  
  4. double compute_pi( const int PRECISION )
  5. {
  6. 	double pi = 4.0;
  7. 	for( int i = 0; i < PRECISION; ++i )
  8. 	{
  9. 			pi += (i % 2 == 0 ? -4.0 : 4.0) / ( 3.0 + i * 2 );
  10. 	}
  11. 	return( pi );
  12. }
  13.  
  14. int main() {
  15. 	std::cout << compute_pi( 1e6 ) << std::endl;
  16. 	return 0;
  17. }
Success #stdin #stdout 0.01s 3340KB
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3.14159
https://ideone.com/BIl3aj
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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