/in/foo.cc: In function 'int main()':
/in/foo.cc:9:37: warning: iteration 9 invokes undefined behavior [-Waggressive-loop-optimizations]
   for (i=1; i<=10; i++) if (max>=a[i]) apples++;
                                  ~~~^
/in/foo.cc:9:14: note: within this loop
   for (i=1; i<=10; i++) if (max>=a[i]) apples++;
             ~^~~~