foo.c: In function 'main':
foo.c:42:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   42 |  scanf("%d%d%d",&n1,&n2,&n3);
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~
foo.c:45:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   45 |  scanf("%d",&a[i]);
      |  ^~~~~~~~~~~~~~~~~
foo.c:47:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   47 |  scanf("%d",&b[i]);
      |  ^~~~~~~~~~~~~~~~~
foo.c:49:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   49 |  scanf("%d",&c[i]);
      |  ^~~~~~~~~~~~~~~~~

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