foo.c: In function 'insert':
foo.c:18:1: warning: control reaches end of non-void function [-Wreturn-type]
   18 | }
      | ^
foo.c: In function 'main':
foo.c:25:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   25 |     scanf("%d\n",&n);
      |     ^~~~~~~~~~~~~~~~
foo.c:29:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   29 |   scanf("%d",&array[i]);
      |   ^~~~~~~~~~~~~~~~~~~~~
foo.c:31:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   31 |  scanf("%d",&x);
      |  ^~~~~~~~~~~~~~

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