foo.cc: In function 'int main()':
foo.cc:13:20: warning: format '%f' expects a matching 'double' argument [-Wformat=]
   13 |         printf("%.2f,m");
      |                 ~~~^
      |                    |
      |                    double
foo.cc:5:17: warning: variable 'm' set but not used [-Wunused-but-set-variable]
    5 |         float s,m;
      |                 ^

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