foo.c: In function 'main':
foo.c:17:19: warning: unused variable 'j' [-Wunused-variable]
   17 |  int a[10000],n,i,j,k;
      |                   ^
foo.c: In function 'MoveLeft':
foo.c:14:1: warning: control reaches end of non-void function [-Wreturn-type]
   14 | }
      | ^
foo.c: In function 'main':
foo.c:18:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   18 |  scanf("%d",&n);
      |  ^~~~~~~~~~~~~~
foo.c:20:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   20 |   scanf("%d",&a[i]);
      |   ^~~~~~~~~~~~~~~~~
foo.c:21:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   21 |  scanf("%d",&k);
      |  ^~~~~~~~~~~~~~

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