foo.c: In function 'main':
foo.c:28:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   28 |  scanf("%d", &A);
      |  ^~~~~~~~~~~~~~~
foo.c:29:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   29 |  scanf("%d", &B);
      |  ^~~~~~~~~~~~~~~
foo.c:32:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   32 |   scanf("%d", &a[i]);
      |   ^~~~~~~~~~~~~~~~~~
foo.c:36:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   36 |   scanf("%d", &b[i]);
      |   ^~~~~~~~~~~~~~~~~~

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