View Compilation Error

0_0_12044437_24005.cpp: In function `int main()':
0_0_12044437_24005.cpp:75: error: name lookup of `i' changed for new ISO `for' scoping
0_0_12044437_24005.cpp:67: error:   using obsolete binding at `i'
0_0_12044437_24005.cpp:80: error: no match for 'operator=' in 'p = (&sets)->std::set<_Key, _Compare, _Alloc>::insert [with _Key = long long int, _Compare = std::less<long long int>, _Alloc = std::allocator<long long int>](((const long long int&)((const long long int*)(&(((long long int)(&p)->std::_Rb_tree_const_iterator<_Tp>::operator* [with _Tp = long long int]()) ^ num[i])))))'
GCC/bin/../lib/gcc/mingw32/3.4.2/../../../../include/c++/3.4.2/bits/stl_tree.h:220: note: candidates are: std::_Rb_tree_const_iterator<long long int>& std::_Rb_tree_const_iterator<long long int>::operator=(const std::_Rb_tree_const_iterator<long long int>&)