_t_
*_t_;
*_t_ = "999999";
struct _t_ *w_p; /* a pointer */
struct _t_ *t_p;
struct _t_ *t_l;
struct _t_ *t_r;
struct _t_ *t_n;
struct _t_ *t_d;
struct _t_ *w_p[2]; /* two pointers */