Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:37:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j, k, c, caut; ^ user.cpp:37:15: warning: unused variable ‘k’ [-Wunused-variable] int i, j, k, c, caut; ^ In file included from /usr/include/c++/4.8/algorithm:62:0, from user.cpp:3: /usr/include/c++/4.8/bits/stl_algo.h: In instantiation of ‘_RandomAccessIterator std::__unguarded_partition(_RandomAccessIterator, _RandomAccessIterator, const _Tp&) [with _RandomAccessIterator = secv*; _Tp = secv]’: /usr/include/c++/4.8/bits/stl_algo.h:2307:70: required from ‘_RandomAccessIterator std::__unguarded_partition_pivot(_RandomAccessIterator, _RandomAccessIterator) [with _RandomAccessIterator = secv*]’ /usr/include/c++/4.8/bits/stl_algo.h:2338:54: required from ‘void std::__introsort_loop(_RandomAccessIterator, _RandomAccessIterator, _Size) [with _RandomAccessIterator = secv*; _Size = int]’ /usr/include/c++/4.8/bits/stl_algo.h:5475:36: required from ‘void std::sort(_RAIter, _RAIter) [with _RAIter = secv*]’ user.cpp:52:26: required from here /usr/include/c++/4.8/bits/stl_algo.h:2269:19: error: passing ‘const secv’ as ‘this’ argument of ‘bool secv::operator<(const secv&)’ discards qualifiers [-fpermissive] while (__pivot < *__last) ^