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  1. #include <iostream>
  2. using namespace std;
  3. double f(double x){
  4. 	return 3*x*x-4*x+1;
  5. }
  6. double f1(double x){
  7. 	return 6*x-4;
  8. }
  9. int main() {
  10. 	// your code goes here
  11. 	double a,b,eps;
  12. 	cin>>a>>b>>eps;
  13. 	int k=0;
  14. 	while(abs(b-a)>eps){
  15. 		double c=(b+a)/2;
  16. 		if(f1(c)==0){
  17. 			cout<<c;
  18. 		}
  19. 		if(f1(c)>0){
  20. 			b=c;
  21. 		}
  22. 		if(f1(c)<0){
  23. 			a=c;
  24. 			k++;
  25. 		}
  26. 	}
  27. 	cout<<(b+a)/2<<k;
  28. 	return 0;
  29. }
Success #stdin #stdout 0s 5308KB
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https://ideone.com/6gEcs3
language:
C++ (gcc 8.3)
created:
6 days ago
visibility:
public

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