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  1. #include <iostream>
  2. #include <cmath>
  3.  
  4. using namespace std;
  5.  
  6. int main() {
  7.     double a = 3;
  8.     double b = 4;
  9.     double c = 5;
  10.  
  11.     double delta = b * b - 4 * a * c;
  12.  
  13.     cout << "Delta = " << delta << endl;
  14.  
  15.     if (delta > 0) {
  16.         double x1 = (-b - sqrt(delta)) / (2 * a);
  17.         double x2 = (-b + sqrt(delta)) / (2 * a);
  18.         cout << "Dwa pierwiastki rzeczywiste:" << endl;
  19.         cout << "x1 = " << x1 << endl;
  20.         cout << "x2 = " << x2 << endl;
  21.     } 
  22.     else if (delta == 0) {
  23.         double x = -b / (2 * a);
  24.         cout << "Jeden pierwiastek podwojny:" << endl;
  25.         cout << "x = " << x << endl;
  26.     } 
  27.     else {
  28.         cout << "Brak pierwiastkow rzeczywistych." << endl;
  29.     }
  30.  
  31.     return 0;
  32. }
  33.  
Success #stdin #stdout 0s 5316KB
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Standard input is empty
stdout
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Delta = -44
Brak pierwiastkow rzeczywistych.
https://ideone.com/tL9qtz
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

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