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  1. #include <iostream>
  2. #include <cmath>
  3. #include <iomanip>
  4. using namespace std;
  5.  
  6.  
  7. double pierwiastek(double x, double eps) {
  8. 	double a = 0.0;
  9. 	double b = x;
  10. 	double c;
  11. 	while (fabs(b - a) > eps) {
  12. 		c = (a + b) / 2.0;
  13. 		if (c * c > x)
  14. 		b = c;
  15. 		else
  16. 		a = c;
  17. 	}
  18. 	return c;
  19. }
  20. int main() {
  21.  
  22.     cout << setprecision(2) << pierwiastek(2.0, 0.1)<<endl;
  23.     cout << setprecision(3) << pierwiastek(2.0, 0.01)<< endl;
  24.     cout << setprecision(5) << pierwiastek(2.0, 0.00001)<< endl;
  25.     return 0;
  26. }
Success #stdin #stdout 0.01s 5264KB
comments (?)
stdin 
Standard input is empty
stdout 
1.4
1.41
1.4142
https://ideone.com/Sclfq0
language:
C++ 4.3.2 (gcc-4.3.2)
created:
3 days ago
visibility:
public

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