/in/foo.cc: In function 'int small(int)':
/in/foo.cc:14:12: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
  else a=k^k+(k-1)^(k-1) ;
           ~^~~~~~
/in/foo.cc:15:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^