struct SpecialVariables
{
    int i = 0;

    SpecialVariables& operator++()
    {
        
        
        
        this->i++;  

        
        return *this;
    }

};

int main()
{
    SpecialVariables sv;
    auto sv2 = ++sv;     
    std::cout <<  << sv.i <<  << sv2.i << ;
}