#include<stdio.h>
#include<stdlib.h>
#include<string.h>
 
// typedefs don't belong inside functions (not usually, anyway...)
typedef struct {
    int room_num;
    char room_name[80];
    char desc[1000];
    int num_links;
    char direction1[6];
    int dest1;
    char direction2[6];
    int dest2;
} roomStruct;
 
// Functions need complete types
void readRoom ( roomStruct rooms[] );
 
// int main() doesn't take any void arguments.
int main () {
  roomStruct rooms[100];
 
  readRoom(rooms);
 
  return 0;
}
 
// And the type must be the same as the prototype's
void readRoom ( roomStruct rooms[] ) {
 
    FILE *fin;
    int i = 0;
 
    fin = fopen("maps.c", "r");
 
    fscanf(fin, "%d", &rooms[i].room_num);
 
    fgets(rooms[i].room_name, 80, fin);
 
    printf("Room number: %d ... Room name: %s\n", rooms[i].room_num, rooms[i].room_name);
 
    // no need to "return" from a void function
}

0
Logan and Eliseo's Room
You are in Logan and Eliseo's room. It's full of people and it's really really loud.
1
west
1
none
0
1
Jake and Garrett's Room
You are in Jake and Garrett's room. There is a big fancy TV, and Garrett and his buddies are playing Splinter Cell.
2
east
0
west
2
2
Will and Ryan's Room
You are in Will and Ryan's room. There is a piano, and there's junk strewn all over the place.
1
east
1
none
2
 

void readRoom (rooms[]) {
 
    FILE *fin;
    int i = 0;
 
    fin = fopen("maps.c", "r");
    if ( fin == NULL )
    {
        /* some kind of error here */
    }
    while ( fscanf(fin, "%s%d", rooms[i].room_name,&rooms[i].room_num) > 1 )
    {
        printf("Room number: %d ... Room name: %s\n", rooms[i].room_num, rooms[i].room_name);
    }
 
    return;
 
}

void readRoom (roomStruct rooms[]) {
 
FILE *fin;
int i = 0;
 
fin = fopen("map.c", "r");
 
fscanf(fin, "%d*[ \t]\n", &rooms[i].room_num);
fscanf(fin, "%s", &rooms[i].room_name);