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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. class Vector {
  5. private:
  6.     int x, y;
  7.  
  8. public:
  9.     Vector() : x(0), y(0) {}
  10.  
  11.     Vector(int x, int y) : x(x), y(y) {}
  12.  
  13.     void Input() {
  14.         cin >> x >> y;
  15.     }
  16.  
  17.     void Out() const {
  18.         cout << x << " " << y << endl;
  19.     }
  20.  
  21.     Vector& operator=(const Vector& other) {
  22.         if (this != &other) {
  23.             x = other.x;
  24.             y = other.y;
  25.         }
  26.         return *this;
  27.     }
  28.  
  29.     Vector operator+(const Vector& other) const {
  30.         return Vector(x + other.x, y + other.y);
  31.     }
  32.  
  33.     Vector operator-(const Vector& other) const {
  34.         return Vector(x - other.x, y - other.y);
  35.     }
  36.  
  37.     Vector& operator+=(const Vector& other) {
  38.         x += other.x;
  39.         y += other.y;
  40.         return *this;
  41.     }
  42.  
  43.     Vector& operator-=(const Vector& other) {
  44.         x -= other.x;
  45.         y -= other.y;
  46.         return *this;
  47.     }
  48.  
  49.     int operator*(const Vector& other) const {
  50.         return x * other.x + y * other.y;
  51.     }
  52. };
  53.  
  54.  
  55. int main() {
  56.     Vector a, b(3, 4), c;
  57.  
  58.     a.Input();
  59.  
  60.     a.Out();
  61.  
  62.     b.Out();
  63.  
  64.     c = a + b;
  65.     c.Out();
  66.  
  67.     c -= b;
  68.     c.Out();
  69.  
  70.     int scalar = a * b;
  71.     cout << scalar << endl;
  72.  
  73.     return 0;
  74. }
Success #stdin #stdout 0.01s 5308KB
comments (?)
stdin
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Standard input is empty
stdout
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0 0
3 4
3 4
0 0
0
https://ideone.com/AXh25W
трикутник спадкування рівнобедренний
language:
C++14 (gcc 8.3)
created:
6 days ago
visibility:
public

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