/*› * tree data› */››#define c_msc  0›#define c_C    1›#define c_M65  2›#define c_OBJ  4›#define c_COM  8›››struct s_unit›{›  char type, nil;›  char name[40];›  char time[6];››  struct s_dep *source;›};››struct s_dep›{›  struct s_unit *dep;›  struct s_dep  *next;›};›