Eroare de compilare: In file included from /usr/local/include/c++/4.8.0/algorithm:62:0, from user.cpp:9: /usr/local/include/c++/4.8.0/bits/stl_algo.h: In instantiation of ‘_RandomAccessIterator std::__unguarded_partition(_RandomAccessIterator, _RandomAccessIterator, const _Tp&, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<Inter*, std::vector<Inter> >; _Tp = Inter; _Compare = int (*)(Inter&, Inter&)]’: /usr/local/include/c++/4.8.0/bits/stl_algo.h:2319:78: required from ‘_RandomAccessIterator std::__unguarded_partition_pivot(_RandomAccessIterator, _RandomAccessIterator, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<Inter*, std::vector<Inter> >; _Compare = int (*)(Inter&, Inter&)]’ /usr/local/include/c++/4.8.0/bits/stl_algo.h:2360:62: required from ‘void std::__introsort_loop(_RandomAccessIterator, _RandomAccessIterator, _Size, _Compare) [with _RandomAccessIterator = __gnu_cxx::__normal_iterator<Inter*, std::vector<Inter> >; _Size = int; _Compare = int (*)(Inter&, Inter&)]’ /usr/local/include/c++/4.8.0/bits/stl_algo.h:5513:44: required from ‘void std::sort(_RAIter, _RAIter, _Compare) [with _RAIter = __gnu_cxx::__normal_iterator<Inter*, std::vector<Inter> >; _Compare = int (*)(Inter&, Inter&)]’ user.cpp:69:39: required from here /usr/local/include/c++/4.8.0/bits/stl_algo.h:2287:35: error: invalid initialization of reference of type ‘Inter&’ from expression of type ‘const Inter’ while (__comp(*__first, __pivot)) ^ /usr/local/include/c++/4.8.0/bits/stl_algo.h:2290:34: error: invalid initialization of reference of type ‘Inter&’ from expression of type ‘const Inter’ while (__comp(__pivot, *__last)) ^