/in/foo.c: In function 'main':
/in/foo.c:18:2: warning: 'z' may be used uninitialized in this function [-Wmaybe-uninitialized]
  printf("%d %d %d",z,y,x);
  ^~~~~~~~~~~~~~~~~~~~~~~~
/in/foo.c:18:2: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]
/in/foo.c:18:2: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized]