foo.cc: In function 'int main()':
foo.cc:10:14: warning: format '%f' expects argument of type 'double', but argument 2 has type 'int' [-Wformat=]
   10 |   printf("%.2f",n*8/10);
      |           ~~~^  ~~~~~~
      |              |     |
      |              |     int
      |              double
      |           %.2d
foo.cc:16:14: warning: format '%f' expects argument of type 'double', but argument 2 has type 'int' [-Wformat=]
   16 |   printf("%.2f",n*9/10);
      |           ~~~^  ~~~~~~
      |              |     |
      |              |     int
      |              double
      |           %.2d
foo.cc:22:14: warning: format '%f' expects argument of type 'double', but argument 2 has type 'int' [-Wformat=]
   22 |   printf("%.2f",n);
      |           ~~~^  ~
      |              |  |
      |              |  int
      |              double
      |           %.2d

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