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  1. #include <iostream>
  2. #include <cmath>
  3. #include <iomanip>
  4.  
  5. using namespace std;
  6.  
  7. int main() {
  8.     // Variables for the coordinates of the vertices of the quadrilateral
  9.     double x1, y1, x2, y2, x3, y3, x4, y4;
  10.  
  11.     // Input of the coordinates of the vertices
  12.     cout << "Enter the coordinates of the four vertices of the quadrilateral:\n";
  13.     cout << "Coordinates of vertex A (x1, y1): ";
  14.     cin >> x1 >> y1;
  15.     cout << "Coordinates of vertex B (x2, y2): ";
  16.     cin >> x2 >> y2;
  17.     cout << "Coordinates of vertex C (x3, y3): ";
  18.     cin >> x3 >> y3;
  19.     cout << "Coordinates of vertex D (x4, y4): ";
  20.     cin >> x4 >> y4;
  21.  
  22.     // Comparison of the diagonal
  23.     double diagonal_AC = sqrt(pow(x3 - x1, 2) + pow(y3 - y1, 2)); // Diagonal AC
  24.     double diagonal_BD = sqrt(pow(x4 - x2, 2) + pow(y4 - y2, 2)); // Diagonal BD
  25.  
  26.     // Comparison of the diagonals
  27.     cout << fixed << setprecision(2);
  28.     if (diagonal_AC > diagonal_BD) {
  29.         cout << "The longer diagonal is AC = " << diagonal_AC << endl;
  30.     } else if (diagonal_BD > diagonal_AC) {
  31.         cout << "The longer diagonal is BD = " << diagonal_BD << endl;
  32.     } else {
  33.         cout << "Both diagonals are equal: AC = BD = " << diagonal_AC << endl;
  34.     }
  35.  
  36.     return 0;
  37. }
Success #stdin #stdout 0.01s 5276KB
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stdin
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Standard input is empty
stdout
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Enter the coordinates of the four vertices of the quadrilateral:
Coordinates of vertex A (x1, y1): Coordinates of vertex B (x2, y2): Coordinates of vertex C (x3, y3): Coordinates of vertex D (x4, y4): Both diagonals are equal: AC = BD = 0.00
https://ideone.com/g97Urb
language:
C++ (gcc 8.3)
created:
14 hours ago
visibility:
public

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