/in/foo.c: In function 'min':
/in/foo.c:5:17: warning: variable 'min_j' set but not used [-Wunused-but-set-variable]
    5 |     int i, min, min_j;
      |                 ^~~~~
/in/foo.c: At top level:
/in/foo.c:18:6: warning: return type of 'main' is not 'int' [-Wmain]
   18 | void main() {
      |      ^~~~
/in/foo.c: In function 'main':
/in/foo.c:24:9: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   24 |         scanf("%d", &n);
      |         ^~~~~~~~~~~~~~~
/in/foo.c:28:13: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   28 |             scanf("%d", &a[i]);
      |             ^~~~~~~~~~~~~~~~~~