foo.cc: In function ‘int main()’:
foo.cc:27:23: warning: ‘x’ may be used uninitialized [-Wmaybe-uninitialized]
   27 |                 printf("%d %d %.9lf\n",x,y,z);
      |                 ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
foo.cc:16:21: note: ‘x’ was declared here
   16 |                 int x,y;
      |                     ^
foo.cc:27:23: warning: ‘y’ may be used uninitialized [-Wmaybe-uninitialized]
   27 |                 printf("%d %d %.9lf\n",x,y,z);
      |                 ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
foo.cc:16:23: note: ‘y’ was declared here
   16 |                 int x,y;
      |                       ^

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