#define a struct Cls_2 {\
Cls_2(char c, double d, int i);\
    char c;\
    double d;\
    int i;\
};\
char &get_c(Cls &cls) {\
    return ((Cls_2 *) &cls)->c;\
}\
\
double &get_d(Cls &cls) {\
    return ((Cls_2 *) &cls)->d;\
}\
\
int &get_i(Cls &cls) {\
    return ((Cls_2 *) &cls)->i;\
}

a