/* types.h */

#define MAXSIZE 100
#define MAXNUM  10
#define MAXNAME 30
#define FALSE 0
#define TRUE 1

typedef struct spnode *SPnodeptr;
typedef struct snode *Snodeptr;
typedef struct pnode *Pnodeptr;

struct supp_element_type {
  char sno[MAXNUM];
  char sname[MAXNAME];
};

struct part_element_type {
  char pno[MAXNUM];
  char pname[MAXNAME];
};

struct snode {
  struct supp_element_type supplier;
  SPnodeptr first_sp;
  Snodeptr next;
};

struct pnode {
  struct part_element_type part;
  SPnodeptr first_sp;
  Pnodeptr next;
};

struct spnode {
  SPnodeptr snext, pnext;
  Snodeptr s_owner;
  Pnodeptr p_owner;
};