#include <assert.h>
#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
/* machine-dependent definitions */
/* the following definitions are for the Tahoe */
extern int errno;
/* system functions */
extern void free();
extern char *calloc();
extern char *malloc();
extern char *realloc();
extern char *strcpy();