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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.     double delta = b*b - 4*a*c;
  12.  
  13.     if (delta > 0) {
  14.         double x1 = (-b - sqrt(delta)) / (2*a);
  15.         double x2 = (-b + sqrt(delta)) / (2*a);
  16.         cout << "Dwa pierwiastki:" << endl;
  17.         cout << "x1 = " << x1 << endl;
  18.         cout << "x2 = " << x2 << endl;
  19.     }
  20.     else if (delta == 0) {
  21.         double x = -b / (2*a);
  22.         cout << "Jeden pierwiastek:" << endl;
  23.         cout << "x = " << x << endl;
  24.     }
  25.     else {
  26.         cout << "Brak pierwiastkow rzeczywistych" << endl;
  27.     }
  28.  
  29.     return 0;
  30. }
  31.  
Success #stdin #stdout 0.01s 5256KB
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Standard input is empty
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Brak pierwiastkow rzeczywistych
https://ideone.com/wJli8x
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

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