C++ Operator Overload binary + operator

#include <iostream> 
class MyClass //  w  w  w  .j a v  a2  s  .  c o  m
{ 
private: 
    int x; 
    double d; 

public: 
    MyClass(int xx, double dd) 
         : x{ xx }, d{ dd } 
    { 
    } 
    MyClass& operator+=(const MyClass& rhs) 
    { 
        this->x += rhs.x; 
        this->d += rhs.d; 
        return *this; 
    } 

    friend MyClass operator+(MyClass lhs, const MyClass& rhs) 
    { 
        lhs += rhs; 
        return lhs; 
    } 
}; 

int main() 
{ 
    MyClass myobject{ 1, 1.0 }; 
    MyClass mysecondobject{ 2, 2.0 }; 
    MyClass myresult = myobject + mysecondobject; 
    std::cout << "Used the overloaded + operator."; 
}