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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. void czytaj_punkt(double &x, double &y, double a, double b)
  5. {
  6.     x = a;
  7.     y = b;
  8. }
  9.  
  10. double det(double xA, double yA, double xB, double yB, double xP, double yP)
  11. {
  12.     return (xB - xA) * (yP - yA) - (yB - yA) * (xP - xA);
  13. }
  14.  
  15. bool punkty_po_stronie(double xA, double yA, double xB, double yB, double xP, double yP)
  16. {
  17.     return det(xA, yA, xB, yB, xP, yP) > 0;
  18. }
  19.  
  20. int main()
  21. {
  22.     double xA, yA, xB, yB, xP, yP;
  23.  
  24.     czytaj_punkt(xA, yA, 1, 1);
  25.     czytaj_punkt(xB, yB, 3, 3);
  26.     czytaj_punkt(xP, yP, 0, 3);
  27.  
  28.     if (punkty_po_stronie(xA, yA, xB, yB, xP, yP))
  29.         cout << "punkt P lezy po lewej stronie";
  30.     else
  31.         cout << "punkt P lezy po prawej stronie";
  32.  
  33.     return 0;
  34. }
Success #stdin #stdout 0.01s 5280KB
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punkt P lezy po lewej stronie
https://ideone.com/U1q4Gh
language:
C++ (gcc 8.3)
created:
3 days ago
visibility:
public

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