/in/foo.cc: In function 'int main()':
/in/foo.cc:14:31: error: expected ')' before 'y2'
   14 |                 printf("%0.1f" y2);
      |                       ~       ^~~
      |                               )
/in/foo.cc:14:29: warning: format '%f' expects a matching 'double' argument [-Wformat=]
   14 |                 printf("%0.1f" y2);
      |                         ~~~~^
      |                             |
      |                             double
/in/foo.cc:16:31: error: expected ')' before 'y1'
   16 |                 printf("%0.1f" y1);
      |                       ~       ^~~
      |                               )
/in/foo.cc:16:29: warning: format '%f' expects a matching 'double' argument [-Wformat=]
   16 |                 printf("%0.1f" y1);
      |                         ~~~~^
      |                             |
      |                             double