/in/foo.cc: In function 'void BTS(int)':
/in/foo.cc:13:13: error: expected unqualified-id before ')' token
   if(vis[i].)
             ^
/in/foo.cc:14:2: error: expected primary-expression before '}' token
  }
  ^
/in/foo.cc: In function 'int main()':
/in/foo.cc:18:7: warning: pointer to a function used in arithmetic [-Wpointer-arith]
  BTS[1];
       ^
/in/foo.cc:18:7: warning: value computed is not used [-Wunused-value]
  BTS[1];
  ~~~~~^
/in/foo.cc:18:7: warning: statement has no effect [-Wunused-value]