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  1. #include <iostream>
  2. using namespace std;
  3. double f(double x) {
  4.  return (x-2)*(x-2)+5;
  5. }
  6. double f1(double x) {
  7. return 2*(x-2);
  8. }
  9. int main() {
  10.   double a,b,eps,c,xmin;
  11.   cin>>a>>b>>eps>>xmin;
  12.   int k=0;
  13.   while(abs(b-a)>eps){
  14.   c=(b+a)/2;
  15.  
  16.   if(f1==0) {
  17.   cout<<"exact min"<<c;
  18.   }
  19.  
  20.   if(f1>0)  {
  21.   b=c;
  22.   }
  23.  
  24.   if(f1<0)  {
  25.   a=c;
  26.   }
  27.   k++;
  28.  
  29.  
  30.   }
  31.   xmin=(b+a)/2; 
  32.   cout<<xmin<<" "<<k;
  33.  
  34.  
  35. return 0;
  36. }
Success #stdin #stdout 0s 5324KB
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0.03125 6
https://ideone.com/nE3qak
language:
C++14 (gcc 8.3)
created:
6 days ago
visibility:
public

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