/in/foo.c: In function 'main':
/in/foo.c:18:13: warning: unused variable 'e' [-Wunused-variable]
   18 |         int e;
      |             ^
/in/foo.c:25:13: warning: 't' may be used uninitialized [-Wmaybe-uninitialized]
   25 |         int t;
      |             ^