foo.c: In function 'main':
foo.c:40:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   40 |  scanf("%d %d %d",&n1,&n2,&n3);
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
foo.c:44:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   44 |  scanf("%d",&a[i]);
      |  ^~~~~~~~~~~~~~~~~
foo.c:46:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   46 |  scanf("%d",&b[i]);
      |  ^~~~~~~~~~~~~~~~~
foo.c:48:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   48 |  scanf("%d",&c[i]);
      |  ^~~~~~~~~~~~~~~~~

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