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  1. #include <iostream>
  2. #include <math.h>
  3.  
  4.  
  5. using namespace std;
  6.  
  7. int main()
  8. {
  9. 	double pi = M_PI;
  10. 	int pre = 0;
  11.  
  12. 	cin >> pre;
  13.  
  14. 	cout.precision(pre);
  15. 	cout << fixed << pi;
  16. 	return 0;
  17. }
Success #stdin #stdout 0s 16064KB
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3.14
https://ideone.com/RoeN3G
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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