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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. double det(double xA, double yA, double xB, double yB, double xP, double yP)
  5. {
  6.     return (xB - xA) * (yP - yA) - (yB - yA) * (xP - xA);
  7. }
  8.  
  9. void czytaj_punkt(double &xP, double &yP)
  10. {
  11.     cout << "Podaj wspolrzedne punktu P (x y): ";
  12.     cin >> xP >> yP;
  13. }
  14.  
  15. bool punkt_w_odcinku(double xA, double yA, double xB, double yB, double xP, double yP)
  16. {
  17.     if(det(xA,yA,xB,yB,xP,yP) != 0)
  18.         return false;
  19.  
  20.     if(xP >= min(xA,xB) && xP <= max(xA,xB) &&
  21.        yP >= min(yA,yB) && yP <= max(yA,yB))
  22.         return true;
  23.  
  24.     return false;
  25. }
  26.  
  27. int main()
  28. {
  29.     double xA = 0, yA = 0;
  30.     double xB = 2, yB = 2;
  31.     double xP = 1, yP = 1;
  32.  
  33.     czytaj_punkt(xP, yP);
  34.  
  35.     if(punkt_w_odcinku(xA,yA,xB,yB,xP,yP))
  36.         cout << "Punkt P nalezy do odcinka AB." << endl;
  37.     else
  38.         cout << "Punkt P nie nalezy do odcinka AB." << endl;
  39.  
  40.     return 0;
  41. }
Success #stdin #stdout 0s 5320KB
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Podaj wspolrzedne punktu P (x y): Punkt P nalezy do odcinka AB.
https://ideone.com/AsxBXK
language:
C++ (gcc 8.3)
created:
4 hours ago
visibility:
public

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