foo.c: In function 'main':
foo.c:25:11: warning: format '%d' expects a matching 'int *' argument [-Wformat=]
   25 |   scanf("%d,&b[i]");
      |          ~^
      |           |
      |           int *
foo.c:21:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   21 |  scanf("%d %d",&n1,&n2);
      |  ^~~~~~~~~~~~~~~~~~~~~~
foo.c:23:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   23 |   scanf("%d",&a[i]);
      |   ^~~~~~~~~~~~~~~~~
foo.c:25:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   25 |   scanf("%d,&b[i]");
      |   ^~~~~~~~~~~~~~~~~

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