/in/foo.c: In function 'main':
/in/foo.c:5:9: warning: unused variable 'a' [-Wunused-variable]
     int a[10000];
         ^
/in/foo.c: In function 'ZF':
/in/foo.c:23:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^