foo.c: In function 'main':
foo.c:23:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d\n",&t);
  ^~~~~~~~~~~~~~~~
foo.c:25:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&x);
  ^~~~~~~~~~~~~~
foo.c:29:6: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
      scanf("%d",&y);
      ^~~~~~~~~~~~~~

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