/in/foo.cc: In function 'int main()':
/in/foo.cc:8:10: warning: 'i' is used uninitialized in this function [-Wuninitialized]
     char i;
          ^
/in/foo.cc:21:8: warning: 'll' may be used uninitialized in this function [-Wmaybe-uninitialized]
    ll++;
        ^
/in/foo.cc:15:8: warning: 'ww' may be used uninitialized in this function [-Wmaybe-uninitialized]
    ww++;
        ^