✨ override +, +=

main.cpp

@@ -8,5 +8,13 @@ int main()
     cout << Position(2, 5) << endl;
     cout << Position(-1, 9) << endl;
     cout << Position(0, 0) << endl;
+
+    cout << Position(0, 0) + Position(1, 6) << endl;
+    auto p1 = Position(8, 8);
+    auto p2 = Position(4, 1);
+    cout << p1 << endl;
+    p1 += p2;
+    cout << p1 << endl;
+
     return 0;
 }

position/Position.cpp

@@ -15,3 +15,16 @@ std::ostream &operator<<(ostream &os, const Position &pos)
     os << "⁅ " << pos.m_x_pos << " ; " << pos.m_y_pos << " ⁆";
     return os;
 }
+
+Position &Position::operator+=(const Position &rhs)
+{
+    this->m_x_pos += rhs.m_x_pos;
+    this->m_y_pos += rhs.m_y_pos;
+    return *this;
+}
+
+Position operator+(Position lhs, const Position &rhs)
+{
+    lhs += rhs;
+    return lhs;
+}

position/Position.h

@@ -14,6 +14,8 @@ private:
     int m_x_pos, m_y_pos;
 public:
     explicit Position(int x_pos, int y_pos);
+    Position& operator+=(const Position& rhs);
+    friend Position operator+(Position lhs, const Position& rhs);
     friend std::ostream& operator<<(std::ostream& os, const Position& pos);
 };