foo.cc: In function 'int main()':
foo.cc:38:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   38 |     scanf("%d", &t);
      |     ~~~~~^~~~~~~~~~
foo.cc:40:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   40 |         scanf("%d", &n);
      |         ~~~~~^~~~~~~~~~
foo.cc:42:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   42 |             scanf("%d", &arr[i]);
      |             ~~~~~^~~~~~~~~~~~~~~
foo.cc:45:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   45 |             scanf("%d", &target[i]);
      |             ~~~~~^~~~~~~~~~~~~~~~~~

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