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);
      |     ~~~~~^~~~~~~~~
foo.cc:56:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   56 |         scanf("%d %d %d",&circle[i].x,&circle[i].y,&circle[i].r);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
foo.cc:65:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   65 |     scanf("%d",&q);
      |     ~~~~~^~~~~~~~~
foo.cc:69:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   69 |         scanf("%d %d %d %d",&x1,&y1,&x2,&y2);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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