/in/foo.cc: In function 'int MoveRight(int)':
/in/foo.cc:40:19: warning: 'j' may be used uninitialized [-Wmaybe-uninitialized]
   40 |         return a[j];
      |                   ^
/in/foo.cc:28:15: note: 'j' was declared here
   28 |         int i,j;
      |               ^