Operator Overloading

Operator Overloading

Operator overloading lets you define custom behavior for operators like +, -, *, etc. when used with user-defined types.

Syntax

Define a function with the keyword operator followed by the operator symbol. It can be a member function or a friend function.

#include <iostream>
using namespace std;

class Vector {
public:
  double x, y;

  Vector(double x, double y) {
    this->x = x;
    this->y = y;
  }

  Vector operator+(const Vector& v) {
    return Vector(x + v.x, y + v.y);
  }

  void display() {
    cout << "(" << x << ", " << y << ")\n";
  }
};

int main() {
  Vector v1(1.5, 2.5);
  Vector v2(3.0, 4.0);
  Vector v3 = v1 + v2;
  v3.display();
  return 0;
}