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  1. #include <iostream>
  2. #include <cmath>
  3.  
  4. using namespace std;
  5.  
  6. double f(double x)
  7. {
  8.     return x*x*x - x - 2;   // mozna zmienic funkcje
  9. }
  10.  
  11. int main()
  12. {
  13.     double a, b, srodek;
  14.     double eps = 0.000001;
  15.  
  16.     cin >> a >> b;
  17.  
  18.     if (f(a) * f(b) >= 0)
  19.         return 0;
  20.  
  21.     while ((b - a) / 2 > eps)
  22.     {
  23.         srodek = (a + b) / 2;
  24.  
  25.         if (f(a) * f(srodek) < 0)
  26.             b = srodek;
  27.         else
  28.             a = srodek;
  29.     }
  30.  
  31.     srodek = (a + b) / 2;
  32.     cout << srodek;
  33.  
  34.     return 0;
  35. }
  36.  
  37.  
Success #stdin #stdout 0.01s 5316KB
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https://ideone.com/OT7COJ
language:
C++ (gcc 8.3)
created:
3 days ago
visibility:
public

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