foo.cc: In function 'int main()':
foo.cc:54:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   54 |     scanf("%d\n",&t);
      |     ~~~~~^~~~~~~~~~~
foo.cc:57:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   57 |         scanf("%c %d %d\n",&flag,&x,&y);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

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