foo.cc: In function 'int main()':
foo.cc:13:13: warning: format '%d' expects argument of type 'int', but argument 2 has type 'double' [-Wformat=]
   13 |  printf("%.2d",h);
      |          ~~~^  ~
      |             |  |
      |             |  double
      |             int
      |          %.2f

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