/in/foo.cc: In function 'int main()':
/in/foo.cc:10:28: warning: format '%f' expects argument of type 'double', but argument 2 has type 'int' [-Wformat=]
   10 |                 printf("%.2f",0);
      |                         ~~~^  ~
      |                            |  |
      |                            |  int
      |                            double
      |                         %.2d