foo.c: In function 'main':
foo.c:10:9: warning: unused variable 'binIndex' [-Wunused-variable]
   10 |     int binIndex = 0;
      |         ^~~~~~~~
foo.c:9:9: warning: unused variable 'bin' [-Wunused-variable]
    9 |     int bin[32];
      |         ^~~
foo.c: In function 'getBin':
foo.c:21:1: warning: control reaches end of non-void function [-Wreturn-type]
   21 | }
      | ^

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