/in/hotel-mt.c: In function 'inihotel':
/in/hotel-mt.c:54:20: error: passing argument 1 of 'fgets' makes pointer from integer without a cast [-Werror=int-conversion]
              fgets(lines[100],100,fp);
                    ^~~~~
In file included from /in/hotel-mt.c:1:0:
/usr/include/stdio.h:624:14: note: expected 'char * restrict' but argument is of type 'char'
 extern char *fgets (char *__restrict __s, int __n, FILE *__restrict __stream)
              ^~~~~
/in/hotel-mt.c:60:16: error: implicit declaration of function 'strcmp' [-Werror=implicit-function-declaration]
             if(strcmp(fiword,"room")==0)
                ^~~~~~
/in/hotel-mt.c:65:23: error: passing argument 1 of 'fgets' makes pointer from integer without a cast [-Werror=int-conversion]
                 fgets(lines[100],100,fp);
                       ^~~~~
In file included from /in/hotel-mt.c:1:0:
/usr/include/stdio.h:624:14: note: expected 'char * restrict' but argument is of type 'char'
 extern char *fgets (char *__restrict __s, int __n, FILE *__restrict __stream)
              ^~~~~
cc1: all warnings being treated as errors