foo.c: In function 'main':
foo.c:53:9: warning: 'e' may be used uninitialized in this function [-Wmaybe-uninitialized]
   53 |         printf("%d %d", e, f);
      |         ^~~~~~~~~~~~~~~~~~~~~
foo.c:53:9: warning: 'f' may be used uninitialized in this function [-Wmaybe-uninitialized]

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