foo.cc: In function 'void miui9(int, int)':
foo.cc:31:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   31 | scanf("%d",&right);
      | ~~~~~^~~~~~~~~~~~~
foo.cc:36:6: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   36 | scanf("%d",&r_op);
      | ~~~~~^~~~~~~~~~~~

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