/in/hotel-db.c: In function 'bookRoom':
/in/hotel-db.c:60:17: error: implicit declaration of function 'getline' [-Werror=implicit-function-declaration]
   while((read = getline(&line, &len, f)) != -1){
                 ^~~~~~~
cc1: all warnings being treated as errors
/in/hotel-ll.c: In function 'LoadInfo_Dorm':
/in/hotel-ll.c:92:2: error: implicit declaration of function 'getline' [-Werror=implicit-function-declaration]
  getline(&line, &len, fp);
  ^~~~~~~
/in/hotel-ll.c: In function 'LoadInfo_Family':
/in/hotel-ll.c:156:6: error: variable 'read' set but not used [-Werror=unused-but-set-variable]
  int read = 0;
      ^~~~
/in/hotel-ll.c: In function 'LoadInfo_Couple':
/in/hotel-ll.c:221:6: error: variable 'read' set but not used [-Werror=unused-but-set-variable]
  int read = 0;
      ^~~~
/in/hotel-ll.c: In function 'LoadInfo_Single':
/in/hotel-ll.c:280:6: error: variable 'read' set but not used [-Werror=unused-but-set-variable]
  int read;
      ^~~~
cc1: all warnings being treated as errors