typedef struct ball {} Ball;
typedef struct point {} Point;

void destroy_ball()
{
    puts("Ball putt, neue kaufen.");
}

void destroy_point()
{
    puts("Point futsch, was tun...");
}

#define type(x) _Generic((x), Point: "Point", Ball: "Ball", default: ":(")

#define n_args(...) n_args_impl(0, __VA_ARGS__, 15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0)
#define n_args_impl(_0,_1,_2,_3,_4,_5,_6,_7,_8,_9,_10,_11,_12,_13,_14,_15,N,...) N
#define clean_up(args...) clean_up_helper(n_args(args), args);

static inline void clean_up_helper(unsigned int arg_c, ...)
{
    va_list vl;
    va_start(vl, arg_c);

    for (unsigned int i = 0; i < arg_c; ++i)
    {
        /*
        ??type?? arg = va_arg(vl, ??type??);

        wenn strcmp(type(x), "Ball") == 0
                destroy_ball
                ...
        */
    }
    va_end(vl);
}

int main(void)
{
    Ball b;
    Point p;
    clean_up(b, p);

    return 0;
}