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  1. #include <iostream>
  2. #include <cmath>
  3.  
  4. using namespace std;
  5.  
  6. int main() {
  7.     double a = 1;
  8.     double b = 4;
  9.     double c = 5;
  10.  
  11.     cout << "Rownanie: " << a << "x^2 + " << b << "x + " << c << " = 0" << endl;
  12.  
  13.     double delta = b * b - 4 * a * c;
  14.     cout << "Delta = " << delta << endl;
  15.  
  16.     if (delta > 0) {
  17.         double x1 = (-b - sqrt(delta)) / (2 * a);
  18.         double x2 = (-b + sqrt(delta)) / (2 * a);
  19.         cout << "Dwa pierwiastki rzeczywiste:" << endl;
  20.         cout << "x1 = " << x1 << endl;
  21.         cout << "x2 = " << x2 << endl;
  22.     }
  23.     else if (delta == 0) {
  24.         double x = -b / (2 * a);
  25.         cout << "Jeden pierwiastek rzeczywisty:" << endl;
  26.         cout << "x = " << x << endl;
  27.     }
  28.     else {
  29.         cout << "Brak pierwiastkow rzeczywistych (delta < 0)." << endl;
  30.     }
  31.  
  32.     return 0;
  33. }
  34.  
Success #stdin #stdout 0.01s 5284KB
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Standard input is empty
stdout
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Rownanie: 1x^2 + 4x + 5 = 0
Delta = -4
Brak pierwiastkow rzeczywistych (delta < 0).
https://ideone.com/141ha7
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

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