/in/foo.c: In function 'main':
/in/foo.c:14:18: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
   14 |         printf("%d",c);
      |                 ~^  ~
      |                  |  |
      |                  |  long long int
      |                  int
      |                 %lld
/in/foo.c:28:22: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
   28 |             printf("%d",c);
      |                     ~^  ~
      |                      |  |
      |                      |  long long int
      |                      int
      |                     %lld
/in/foo.c:22:9: warning: variable 'has_div3' set but not used [-Wunused-but-set-variable]
   22 |     int has_div3 = 0;
      |         ^~~~~~~~