answer.code: In function ‘solve’:
answer.code:45:13: warning: ‘return’ with no value, in function returning non-void
   45 |             return;
      |             ^~~~~~
answer.code:3:10: note: declared here
    3 |     int* solve(int length, int* array)
      |          ^~~~~
answer.code: In function ‘main’:
answer.code:59:7: error: expected expression before ‘]’ token
   59 |     b[] = solve(n,a);
      |       ^
answer.code:65:22: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘int *’ [-Wformat=]
   65 |             printf("%d ", &b[i]);
      |                     ~^    ~~~~~
      |                      |    |
      |                      int  int *
      |                     %ls
answer.code:54:5: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
   54 |     scanf("%d", &n);
      |     ^~~~~~~~~~~~~~~
answer.code:57:9: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
   57 |         scanf("%d", &a[i]);
      |         ^~~~~~~~~~~~~~~~~~