Eroare de compilare: user.cpp: In function ‘int cripteaza(int)’: user.cpp:56:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0 ; i <= s.size()-1 ; i++) ^ In file included from /usr/local/include/c++/4.8.0/algorithm:62:0, from user.cpp:2: /usr/local/include/c++/4.8.0/bits/stl_algo.h: In instantiation of ‘void std::__insertion_sort(_RandomAccessIterator, _RandomAccessIterator) [with _RandomAccessIterator = cuvint*]’: /usr/local/include/c++/4.8.0/bits/stl_algo.h:2235:62: required from ‘void std::__final_insertion_sort(_RandomAccessIterator, _RandomAccessIterator) [with _RandomAccessIterator = cuvint*]’ /usr/local/include/c++/4.8.0/bits/stl_algo.h:5476:47: required from ‘void std::sort(_RAIter, _RAIter) [with _RAIter = cuvint*]’ user.cpp:124:21: required from here /usr/local/include/c++/4.8.0/bits/stl_algo.h:2161:13: error: no match for ‘operator<’ (operand types are ‘cuvint’ and ‘cuvint’) if (*__i < *__first) ^ /usr/local/include/c++/4.8.0/bits/stl_algo.h:2161:13: note: candidates are: In file included from /usr/local/include/c++/4.8.0/bits/stl_algobase.h:64:0, from /usr/local/include/c++/4.8.0/bits/char_traits.h:39, from /usr/local/include/c++/4.8.0/ios:40, from /usr/local/include/c++/4.8.0/istream:38, from /usr/local/include/c++/4.8.0/fstream:38, from user.cpp:1: /usr/local/include/c++/4.8.0/bits/stl_pair.h:220:5: note: template<class _T1, class _T2> constexpr bool std::operator<(const std::pair<_T1, _T2>&, const std::pair<_T1, _T2>&) operator<(const pair<_T1, _T2>& __x, const pair<_T1, _T2>& __y) ^ /usr/local/include/c++/4.8.0/bits/stl_pair.h:220:5: note: template argument deduction/substitution failed: In file included from /usr/local/include/c++/4.8.0/algorithm:62:0, from user.cpp:2: /usr/local/include/c++/4.8.0/bits/stl_algo.h:2161:13: note: ‘cuvint’ is not derived from ‘const std::pair<_T1, _T2>’ if (*__i < *__first) ^ In file included from /usr/local/include/c++/4.8.0/bits/stl_algobase.h:67:0, from /usr/local/include/c++/4.8.0/bits/char_traits.h:39, from /usr/local/include/c++/4.8.0/ios:40, from /usr/local/include/c++/4.8.0/istream:38, from /usr/local/include/c++/4.8.0/fstream:38, from user.cpp:1: /usr/local/include/c++/4.8.0/bits/stl_iterator.h:297:5: note: template<class _Iterator> bool std::operator<(const std::reverse_iterator<_Iterator>&, const std::reverse_iterator<_Iterator>&) operator<(const reverse_iterator<_Iterator>& __x, ^ /usr/local/include/c++/4.8.0/bits/stl_iterator.h:297:5: note: template argument deduction/substitution failed: In file included from /usr/local/include/c++/4.8.0/algorithm:62:0, from user.cpp:2: /usr/local/include/c++/4.8.0/bits/stl_algo.h:2161:13: note: ‘cuvint’ is not derived from ‘const std::reverse_iterator<_Iterator>’ if (*__i < *__first) ^ In file included from /usr/local/include/c++/4.8.0/bits/stl_algobase.h:67:0, from /usr/local/include/c++/4.8.0/bits/char_traits.h:39, from /usr/local/include/c++/4.8.0/ios:40, from /usr/local/include/c++/4.8.0/istream:38, from /usr/local/include/c++/4.8.0/fstream:38, from user.cpp:1: