foo.c: In function 'main':
foo.c:23:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   23 |     scanf("%d",&n);
      |     ^~~~~~~~~~~~~~
foo.c:26:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   26 |     scanf("%d",&a[i]);
      |     ^~~~~~~~~~~~~~~~~
foo.c:27:5: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   27 |     scanf("%d",&x);
      |     ^~~~~~~~~~~~~~

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