/in/foo.c: In function 'main':
/in/foo.c:10:17: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'int' [-Wformat=]
   10 |         scanf("%d", n);
      |                ~^   ~
      |                 |   |
      |                 |   int
      |                 int *
/in/foo.c:10:9: warning: 'n' is used uninitialized [-Wuninitialized]
   10 |         scanf("%d", n);
      |         ^~~~~~~~~~~~~~
/in/foo.c:9:13: note: 'n' was declared here
    9 |         int n;
      |             ^