В цикле пройти по полям структуры

struct Rules
    {
    public:
        std::string left;
        std::string rule1;
        std::string rule2;
        std::string rule3;
        ...
     }

std::vector<Rules*>

#include <boost/fusion/include/adapt_struct.hpp>
#include <boost/fusion/algorithm.hpp>
 
struct Rules
{
    std::string left = "left";
    std::string rule1 = "rule1";
    std::string rule2 = "rule2";
    std::string rule3 = "rule3";
};
 
BOOST_FUSION_ADAPT_STRUCT(
    Rules,
    (BOOST_FUSION_ADAPT_AUTO, left),
    (BOOST_FUSION_ADAPT_AUTO, rule1),
    (BOOST_FUSION_ADAPT_AUTO, rule2),
    (BOOST_FUSION_ADAPT_AUTO, rule3)
    )
 
struct value_printer
{
    template <typename U>
    void operator()(const U& x) const
    {
        std::cout << x << '\n';
    }
};
 
int main()
{
    Rules rls;
    boost::fusion::for_each(rls, value_printer());
}

struct Rules
    {
    public:
        std::string left;
        std::string rule[3];
        ...
     }

struct Rules
{
    std::string rules[6];
};

    struct S {
        int a = 1, b = 2;
    };
    S t;
    int * p = &t.a;
    p++;
    if (*p == t.b)
        cout << "Получилось!";
    else
        cout << "Неудача";