if (isempty())  // I think this should return false iff the function isempty returns true
   return -1;
else
    return 1;

if ( (isempty()) == 1)
    return -1;
else
    return 1;

#include "hotel.h"

int getoccupier(int roomno)
{
	off_t offset;
	ssize_t nread;

	offset = (roomno -1) * NAMELENGTH;

	/* find  room slot and read occupiers name */
	if (lseek(infile, offset, SEEK_SET)	== -1) {
		perror("perror");
		exit(1);
	}

	if ( (nread = read(infile, namebuf, NAMELENGTH)) <= 0) {
		perror("read");
		exit(1);
	}
	/* create a string by replacing the newline char w/ the null terminator */
	namebuf[nread-1] = '\0';
	if ( (isempty()) == 1)
		return -1;
	return 1;
}
include "hotel.h" 

int
findfree()
{
	off_t offset;
	int j;
	ssize_t nread;

	for(j = 1; j <= NROOMS; j++)
	{
		offset = (j-1) * NAMELENGTH;
		if ( lseek(infile, offset, SEEK_SET) == -1) {
			perror("lseek in findfree");
			exit(1);
		} else {
			if ( (nread = read(infile, namebuf, NAMELENGTH)) <= 0) {
				perror("read in findfree");
				exit(1);
			} else 
				namebuf[nread-1] = '\0';
		}
		if ( (isempty()) == 1) 
			return j;

	}
	return -1;
}



int
isempty()
{
	if ( (strncmp(namebuf, empty, strlen(empty))) == 0) 
		return 1;
	else 
		return -1;
}

int
main(int argc, char **argv)
{
	int j;
	int c;
	int roomno;
	infile = openfile();


	printf("enter number: ");
    scanf("d", &roomno);
    if ( (getoccupier(roomno)) == -1)
		printf("Room is empty\n");
	else
	  	printf("%s occupies room %d\n", namebuf, roomno);

/*	
	while (1) {
		printf("\n\n\nGet Occupier 1:\nFree Room 2:\nAdd Guest 3:\nFind Free Room 4:\n\n\nChoose: ");
		c = getchar();
		switch(c) {
			case '1': printf("Enter room number: ");
					  scanf("%d", &roomno);
					  if ( (getoccupier(roomno)) == -1)
					  	printf("Room is empty\n");
					  else
					  	printf("%s occupies room %d\n", namebuf, roomno);
					  break;
			case '2': printf("Enter room number to clear: ");
					  scanf("%d", &roomno);
					  if  ((freeroom(roomno)) == -1)
					  	printf ("Room is already empty\n");
					  else
					  	printf("%d was emptied\n", roomno);
					  break;
			case '3': if ((roomno = addguest()) == -1) 
						printf("No rooms available\n");
					  else
					  	printf("%s was added to room %d\n", namebuf, roomno);
					  break;
			case '4': if ((roomno = findfree()) == -1)
						printf("No available rooms\n");
					  else
					  	printf("%d is free\n", roomno);
					  break;
		}
	}
*/
	return 0;
}