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  1. #include <stdio.h>
  2. #include <cmath>
  3.  
  4. using namespace std;
  5.  
  6. int main() {
  7. 	double x, y;
  8. 	scanf("%lf", &x);		// input
  9. 	y = 2.0 * M_PI * sin(x);// processing
  10. 	printf ("%lf", y);		// output
  11. 	return 0;
  12. }
Success #stdin #stdout 0s 3300KB
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4 3.78
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-4.755130
https://ideone.com/dJ6aMG
Заготовка для IPO
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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