foo.c: In function 'main':
foo.c:11:17: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'long int *' [-Wformat=]
   11 |         scanf("%d", &arr[i]);
      |                ~^   ~~~~~~~
      |                 |   |
      |                 |   long int *
      |                 int *
      |                %ld
foo.c:30:14: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long int' [-Wformat=]
   30 |     printf("%d", s);
      |             ~^   ~
      |              |   |
      |              int long int
      |             %ld

[Hydro](https://hydro.ac)提供评测服务