/in/foo.cc: In function 'int work(int)':
/in/foo.cc:30:14: warning: array subscript has type 'char' [-Wchar-subscripts]
    if (kkk[ii]==1)
              ^
/in/foo.cc:33:11: warning: array subscript has type 'char' [-Wchar-subscripts]
     kkk[ii]=1;
           ^
/in/foo.cc: In function 'int init()':
/in/foo.cc:81:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^