foo.cc: In function 'int main()':
foo.cc:48:13: warning: format '%f' expects argument of type 'double', but argument 2 has type 'long double' [-Wformat=]
   48 |  printf("%.2f",l);
      |          ~~~^  ~
      |             |  |
      |             |  long double
      |             double
      |          %.2Lf
foo.cc:34:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   34 |  scanf("%d",&n);
      |  ~~~~~^~~~~~~~~
foo.cc:36:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   36 |   scanf("%d %d %d",&addr[i].x,&addr[i].y,&addr[i].s);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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