#define MAXCOMMAND 100
#define HASHELEMENTS 10007

struct htab {
   struct htab *child;
   struct htab *parent;
   char key[MAXCOMMAND];
   char data[HASHELEMENTS];
};

unsigned int hash(char *);
struct htab *addhash(char *, char *);
struct htab *findhash(char *);
int delhash(char *);
void hashprofile(int);

int gettoken(char *);

void ungetch(int);
int getch(void);