foo.cc: In function 'int main()':
foo.cc:6:18: warning: format '%d' expects argument of type 'int', but argument 2 has type '__gnu_cxx::__promote_2<int, int, double, double>::__type' {aka 'double'} [-Wformat=]
    6 |         printf("%d",(int)n-(int)n/pow(2,k));
      |                 ~^  ~~~~~~~~~~~~~~~~~~~~~~
      |                  |        |
      |                  int      __gnu_cxx::__promote_2<int, int, double, double>::__type {aka double}
      |                 %f

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